Citation Nr: 0711033 Decision Date: 04/13/07 Archive Date: 04/25/07 DOCKET NO. 02-13 528 ) DATE ) ) On appeal from the Department of Veterans Affairs Regional Office in San Diego, California THE ISSUE Entitlement to service connection for residuals of a brain tumor, status post left frontal temporal craniotomy. REPRESENTATION Appellant represented by: Disabled American Veterans WITNESS AT HEARINGS ON APPEAL The veteran ATTORNEY FOR THE BOARD L. B. Cryan, Counsel INTRODUCTION The veteran had active service from September 1960 to September 1962. This case is before the Board of Veterans' Appeals (Board) on appeal from a June 2000 rating decision by the Department of Veterans Affairs (VA) Regional Office (RO) in San Diego, California, which determined that new and material evidence had not been submitted to reopen the claim of service connection for residuals of a brain tumor, status post left frontal temporal craniotomy. The veteran testified before the undersigned Veterans Law Judge at a Travel Board hearing in February 2004. A transcript of his testimony is associated with the claims file. Service connection for headaches and/or a brain tumor was initially denied by the Board in a September 1982 decision. The veteran subsequently testified at a personal hearing before a Hearing Officer at the RO in January 1985, and a copy of that transcript is also associated with the claims file. In a September 2004 decision, the Board reopened the previously denied claim of service connection for the residuals of a brain tumor, status post left frontal temporal craniotomy, and remanded the matter back to the RO, via the Appeals Management Center (AMC) for additional development. After completion of the requested development, the RO/AMC issued a supplemental statement of the case in September 2005 and returned the case to the Board. The Board subsequently requested an independent medical opinion pursuant to 38 C.F.R. § 3.328 and 20.901(d). The opinion was secured and associated with the claims file in November 2006, and the veteran submitted additional evidence in support of his claim in response to the medical opinion, with a waiver of review by the Agency of Original Jurisdiction (AOJ). The case is now ready for appellate review and disposition. FINDINGS OF FACT 1. The veteran's brain tumor clearly and unmistakably pre- existed service and was not aggravated by service. 2. The medical evidence of record demonstrates that any permanent increase in severity of the veteran's pre-existing brain tumor during service was due to the natural progression of the disease. 3. The evidence does not demonstrate that the veteran's current residuals of a brain tumor status post left frontal temporal craniotomy are related to the veteran's military service. CONCLUSIONS OF LAW 1. The presumption of soundness at entry into service is rebutted by clear and unmistakable evidence demonstrating that the veteran had a pre-existing brain tumor that was not aggravated during service; no permanent increase in severity was shown other than that which is due to the natural progression of the disease. 38 U.S.C.A. §§ 1110, 1111, 1131, 1153 (West 2002); 38 C.F.R. §§ 3.303, 3.304, 3.306 (2006). 2. A brain tumor was not incurred in or aggravated by service, and may not be presumed to have been aggravated therein. 38 U.S.C.A. §§ 1101, 1112, 1113, 1131, 5103(a), 5013A, 5107 (West 2002 & Supp. 2005); 38 C.F.R. §§ 3.159, 3.303, 3.307, 3.309(a) (2006). REASONS AND BASES FOR FINDINGS AND CONCLUSIONS I. Duty to Notify and Assist Upon receipt of a complete or substantially complete application for benefits, VA is required to notify the claimant and his or her representative, if any, of any information, and any medical or lay evidence, that is necessary to substantiate the claim. 38 U.S.C.A. § 5103(a) (West 2002 & Supp. 2005); 38 C.F.R. § 3.159(b) (2005); Quartuccio v. Principi, 16 Vet. App. 183 (2002). Proper notice must inform the claimant of any information and evidence not of record (1) that is necessary to substantiate the claim; (2) that VA will seek to provide; and (3) that the claimant is expected to provide; and (4) must ask the claimant to provide any evidence in his or her possession that pertains to the claim, in accordance with 38 C.F.R. § 3.159(b)(1). See Pelegrini v. Principi, 18 Vet. App. 112 (2004); Mayfield v. Nicholson, 19 Vet. App. 103 (2005), rev'd on other grounds, 444 F.3d 1328 (Fed. Cir. 2006). In Pelegrini, the U.S. Court of Appeals for Veterans Claims held, in part, that a adequate notice, as required by 38 U.S.C.A. § 5103(a), must be provided to a claimant before the initial unfavorable AOJ decision on a claim for VA benefits. In the present case, this was not done. However, as discussed below, the Board finds that the duty-to-assist notification provided to the veteran was adequate. In the Mayfield case, the U.S. Court of Appeals for the Federal Circuit addressed the meaning of prejudicial error (38 U.S.C.A. § 7261(b)), what burden each party bears with regard to the Court's taking due account of the rule of prejudicial error, and the application of prejudicial error in the context of the VA's duty to notify (38 U.S.C.A. § 5103(a)). The Federal Circuit held, in effect, that the Board must specify what documents satisfy the duty to provide notice to a claimant, and that the Court of Appeals for Veterans Claims must, if a case is appealed to the Court, specifically review the Board's findings regarding such notice. Considering the decisions in Pelegrini and Mayfield, the Board finds that the notice requirements have been satisfied in this matter, as discussed below. In November 2001, May 2003 and September 2004 letters, the RO informed the veteran of its duty to assist him in substantiating his claim, and the effect of this duty upon his claim. In addition, the veteran was advised, by virtue of a detailed September 2003 statement of the case (SOC) and September 2005 supplemental statement of the case (SSOC) issued during the pendency of this appeal, of the pertinent law, and what the evidence must show in order to substantiate his claims. The Board therefore finds that appropriate notice has been given in this case. Further, the claims file reflects that the SOC and SSOC contained the new duty-to- assist regulation codified at 38 C.F.R. § 3.159 (2005). See Charles v. Principi, 16 Vet. App. 370, 373-74 (2002). As the Federal Circuit Court has stated, it is not required "that VCAA notification must always be contained in a single communication from the VA." Mayfield, supra, 444 F.3d at 1333. The Board concludes that the notifications received by the veteran adequately complied with VA's duty-to-assist and subsequent interpretive authority, and that he has not been prejudiced in any way by the notice and assistance provided by the RO. See Bernard v. Brown, 4 Vet. App. 384, 393-94 (1993); VAOPGCPREC 16-92 (57 Fed. Reg. 49,747 (1992)). Likewise, it appears that all obtainable evidence identified by the veteran relative to his claims has been obtained and associated with the claims file, and that neither he nor his representative has identified any other pertinent evidence, not already of record, which would need to be obtained for a fair disposition of this appeal. Thus, for these reasons, any failure in the timing or language of duty-to-assist notice by the RO constituted harmless error. See also Conway v. Principi, 353 F.3d 1359, 1374 (2004), holding that the Court of Appeals for Veterans Claims must "take due account of the rule of prejudicial error." Accordingly, the Board finds that VA has satisfied its duty to assist the veteran in apprising him as to the evidence needed, and in obtaining evidence pertaining to his claims. The Board, therefore, finds that no useful purpose would be served in remanding this matter for yet more development. Such a remand would result in unnecessarily imposing additional burdens on VA, with no additional benefit flowing to the veteran. The Court of Appeals for Veterans Claims has held that such remands are to be avoided. See Winters v. West, 12 Vet. App. 203 (1999) (en banc), vacated on other grounds sub nom. Winters v. Gober, 219 F.3d 1375 (Fed. Cir. 2000); Soyini v. Derwinski, 1 Vet. App. 540, 546 (1991); Sabonis v. Brown, 6 Vet. App. 426, 430 (1994). See also Livesay v. Principi, 15 Vet. App. 165, 178 (2001) (en banc). In addition to the foregoing harmless-error analysis, to whatever extent the recent decisions of the Court in Dingess v. Nicholson, 19 Vet. App. 473 (2006), and Kent v. Nicholson, 20 Vet. App. 1 (2006) requires more extensive notice in claims for compensation, e.g., as to what evidence is considered new and material, and as to potential downstream issues such as disability rating and effective date, the Board finds no prejudice to the veteran in proceeding with the present decision. Since the claim of service connection was reopened in 2004, any defect in the notice regarding what constitutes new and material evidence is also harmless error; and since the reopened claim for service connection is being denied, no disability rating or effective date will be assigned, so there can be no possibility of any prejudice to the veteran. II. Service Connection The veteran seeks service connection for residuals of a brain tumor, status post left frontal temporal craniotomy. The veteran maintains that the early manifestations of his brain tumor were present during service. The veteran also asserts that the military should be held responsible for not discovering his tumor during service based on his continuous complaints of seizures, paralysis, dizziness and headaches. In this regard, the veteran asserts that radiographic testing such as a CT scan performed during service, or shortly thereafter, would have shown the presence of the tumor. Service connection may be established for a disability resulting from personal injury suffered or disease contracted in the line of duty or for aggravation of preexisting injury suffered or disease contracted in the line of duty. 38 U.S.C.A. §§ 1110, 1131 (West 2002); 38 C.F.R. § 3.303 (2006). Service connection may be granted for any disease diagnosed after discharge, when all the evidence, including that pertinent to service, establishes that the disease was incurred in service. 38 C.F.R. § 3.303(d) (2006). Where there is a chronic disease shown as such in service or within the presumptive period under § 3.307 so as to permit a finding of service connection, subsequent manifestations of the same chronic disease at any later date, however, remote, are service connected, unless clearly attributable to intercurrent causes. 38 C.F.R. § 3.303(b) (2006). This rule does not mean that any manifestations in service will permit service connection. To show chronic disease in service there is required a combination of manifestations sufficient to identify the disease entity, and sufficient observation to establish chronicity at the time as distinguished from merely isolated findings or a diagnosis including the word "chronic". When the disease entity is established, there is no requirement of evidentiary showing of continuity. When the fact of chronicity in service is not adequately supported, then a showing of continuity after discharge is required to support the claim. 38 C.F.R. § 3.303(b) (2006). Continuous service for 90 days or more during a period of war, or peace time service after December 31, 1946, and post- service development of a presumptive disease such as a brain tumor, to a degree of 10 percent within one year from the date of termination of such service, establishes a rebuttable presumption that the disease was incurred in service. 38 U.S.C.A. §§ 1101, 1112, 1113; 1137 (West 2002); 38 C.F.R. §§ 3.307, 3.309 (2006). The Court has held that, in order to prevail on the issue of service connection, there must be medical evidence of a (1) current disability; (2) medical, or in certain circumstances, lay evidence of in-service incurrence or aggravation of a disease or injury; and (3) medical evidence of a nexus between the claimed in-service disease or injury and the present disease or injury. Hickson v. West, 12 Vet. App. 247, 253 (1999); see also Pond v West, 12 Vet. App. 341, 346 (1999). The Board notes that a veteran is presumed in sound condition except for defects noted when examined and accepted for service. Clear and unmistakable evidence that the disability existed prior to service and was not aggravated by service will rebut the presumption of soundness. 38 U.S.C.A. § 1111 (West 2002); VAOPGCPREC 3-2003. A pre-existing disease will be considered to have been aggravated by active service where there is an increase in disability during service, unless there is a specific finding that the increase in disability is due to the natural progression of the disease. 38 U.S.C.A. § 1153 (West 2002); 38 C.F.R. § 3.306 (2006). In VAOGCPREC 3-2003, the VA's General Counsel determined that the presumption of soundness is rebutted only where clear and unmistakable evidence shows that the condition existed prior to service and that it was not aggravated by service. The General Counsel concluded that 38 U.S.C.A. § 1111 requires VA to bear the burden of showing the absence of aggravation in order to rebut the presumption of sound condition. See also Wagner v. Principi, 370 F.3d 1089 (Fed. Cir. 2004) and Cotant v. Principi, 17 Vet. App. 116, 123-30 (2003). The effect of section 1111 on claims for service-connected disability thus may be summarized as follows. When no preexisting condition is noted upon entry into service, the veteran is presumed to have been sound upon entry. The burden then falls on the government to rebut the presumption of soundness by clear and unmistakable evidence that the veteran's disability was both preexisting and not aggravated by service. The government may show a lack of aggravation by establishing that there was no increase in disability during service or that any "increase in disability [was] due to the natural progress of the" preexisting condition. 38 U.S.C.A. § 1153. If this burden is met, then the veteran is not entitled to service-connected benefits. However, if the government fails to rebut the presumption of soundness under section 1111, the veteran's claim is one for service connection. This means that no deduction for the degree of disability existing at the time of entrance will be made if a rating is awarded. Wagner v. Principi, 370 F. 3d 1089, 1096 (Fed. Cir. 2004). Regulations also provide that a preexisting injury or disease will be considered to have been aggravated by active military, naval, or air service where there is an increase in disability during such service, unless there is a specific finding that the increase in disability is due to the natural progress of the disease. 38 U.S.C.A. §§ 1137, 1153 (West 2002); 38 C.F.R. § 3.306(a) (2006). The presumption of aggravation is not applicable unless the preservice disability underwent an increase in severity during service. See Hunt v. Derwinski, 1 Vet. App. 292, 296 (1991). The determination of whether a preexisting disability was aggravated by service is a question of fact. See Doran v. Brown, 6 Vet. App. 283, 286 (1994). In deciding a claim based on aggravation, after having determined the presence of a preexisting condition, the Board must first determine whether there has been any measured worsening of the disability during service and then whether such worsening constitutes an increase in disability or was the result of natural progression of the injury or disease. See Browder v. Brown, 5 Vet. App. 268, 271 (1993); Hensley v. Brown, 5 Vet. App. 155, 163 (1993). Temporary or intermittent flare-ups of the preexisting condition during service are not sufficient to be considered aggravation unless the underlying condition (as contrasted to the symptoms) has worsened. See Davis (John F.) v. Principi, 276 F.3d 1341, 1346 (Fed. Cir. 2002); Hunt, 1 Vet. App. at 296-97. The Court held that, in cases where a condition is properly found to have preexisted service, the Board, in considering the pertinent statutory and regulatory framework governing the presumption of aggravation, must determine: (1) Whether there was a worsening of the disorder during service; and (2) if so, whether there was clear and unmistakable evidence that the increase in severity was due to the natural progress of the disease. See Crowe v. Brown, 7 Vet. App. 238 (1995). The Board must assess the credibility and weight of all the evidence, including the medical evidence, to determine its probative value, accounting for evidence which it finds to be persuasive or unpersuasive, and providing reasons for rejecting any evidence favorable to the claimant. See Masors v. Derwinski, 2 Vet. App. 181 (1992); Wilson v. Derwinski, 2 Vet. App. 614, 618 (1992); Gilbert v. Derwinski, 1 Vet. App. 49 (1990). Equal weight is not accorded to each piece of evidence contained in the record; every item of evidence does not have the same probative value. In determining whether service connection is warranted for a disability, VA is responsible for determining whether the evidence supports the claim or is in relative equipoise, with the veteran prevailing in either event, or whether a preponderance of the evidence is against the claim, in which case the claim is denied. Gilbert v. Derwinski, 1 Vet. App. 49 (1990). Historically, the veteran's military entrance examination report from July 1960 noted the veteran's reported history of headaches and dizziness in 1956, which were attributed to tension. The remainder of the service medical records are negative for complaints, treatment or diagnosis of headaches. There notations of treatment for acute gastrointestinal complaints in October and December 1960 and March 1961, although no chronic disorder was noted. Additionally, the service medical records are silent as to a brain tumor or manifestations therefrom. The August 1962 separation examination report is negative for any pertinent abnormality, although the veteran continued to report a history of dizziness, trouble sleeping, nervousness, eye trouble, gastrointestinal trouble, and nightmares; he denied a history of frequent or severe headaches. In numerous post-service medical evaluations and reports, the veteran reported that he began to experience a variety of symptoms during his senior year of high school, including loss of energy and strength, dizziness, headaches, temporary loss of hearing in his left ear, nausea, vomiting and severe problems with excessive gas and constipation. He also reported difficulty concentrating in school and he began to experience mood swings. Those symptoms and related life difficulties such as the inability to hold a job, persisted for over twenty years without relief. Post-service medical evidence of record indicates that the veteran underwent surgery for a brain tumor in June 1980. The veteran submitted a claim of service connection for residuals of a brain tumor shortly thereafter, in June 1981. In his initial claim for service connection, the veteran reported that he had the tumor at the time he entered service, and that he went on sick call numerous times during service for "headaches." A letter dated in June 1969 from a private Dr. Holleran, which was initially received at the RO in 1981, indicated that the veteran had a chief complaint of severe numbness of the left side of the head and he got very sleepy. Past history included being hit on the forehead with a wrench in 1963 and subsequently being hit with a tire iron on the left side of the head in 1964. A June 1969 private treatment report showed complaints of dizziness. An x-ray report of the skull revealed normal sella and an uncalcified pineal. There was no unusual intracranial calcification or evidence of increased pressure nor was there healing or recent skull fracture. The conclusion was "normal skull." Likewise, a June 1969 electro-encephalogram (EEG) was interpreted as normal. In correspondence dated October 1969, a private Dr. Greenwood indicated that he examined the veteran in August 1969. At that time, the veteran's chief complaint was generalized weakness. The veteran reported that symptoms of stomach trouble began in 1959, but more recently, he had periods of dizziness. Neurological examination showed a paucity of speech; thought was slow, and somewhat disconnected in sequence of history and symptoms. The impression was, "Undiagnosed condition of the central nervous system, manifested by generalized weakness, occasional dizziness, with vomiting, constipation, pain in the abdomen, etc." January 1974 correspondence notes that the veteran had to recently stop attending college due to extreme tiredness and trouble concentrating. A September 1978 private treatment record noted the veteran reported occasional headaches. Private treatment records from 1979 noted his complaints of blurring in the left eye. Diagnostic testing in 1980, including a CT scan revealed a brain tumor. A May 1980 cerebral angiogram revealed asymmetric enlargement of the sella with erosion and destruction of the floor and dorsum on the left, erosion of the left anterior clinoid and left clivus. There was a large mass identified, primarily located in the left temporal fossa. A May 1980, a private hospital admission report noted that a month prior, the veteran had developed a left central scotomata, and was seen by an ophthalmologist. The veteran reported that he had been clumsy since high school and developed some psychosomatic disturbances because of his clumsiness, and occasional difficulty with motor movement. On June 2, 1980 the veteran underwent left frontotemporal craniotomy for partial removal of a huge ("grapefruit" size) frontotemporal dural tumor. Because of the size, the tumor had displaced the Sylvian figure and other cortical structures, and filled the entire middle fossa. Some sinuses and the posterior tentorium were penetrated, and the fifth (trigeminal) nerve had to be sacrificed. Some of the surrounding bone had deteriorated, indicating longstanding presence of the tumor. Postoperatively, the veteran experienced a resultant neurological deficit and nerve palsy. The discharge diagnosis was frontotemporal schwannoma, with residual third and sixth nerve palsies, secondary to excision of the tumor. In a May 1981 letter, the vice principal of the veteran's high school reported that, because of constant complaints of headaches, the veteran missed approximately four months of school during the 1958 school year. In November 1981 correspondence, a fellow serviceman, who served with the veteran, recalled the veteran as having headaches during service. In a lay statement, submitted in January 1982, a fellow high school classmate recalled the veteran's complaints of severe headaches in 1958 and indicated that during that time, he noticed that the veteran seemed confused or disoriented at times. A March 1984 memorandum from the veteran's treating physician at that time noted that the tumor showed no evidence of recurrence as assessed by yearly brain scans and physical examination. However, the doctor noted that the veteran was left with considerable residual disability including complete left ptosis, complete left third nerve palsy with reduced visual acuity in the left eye at 20/400. There was also muscle wasting over the masseter and temporalis muscles on the left and a hemisensory facial loss conforming to the distribution of the 5th cranial nerve. His residual disability was therefore assessed as stationary and permanent at 80-100 percent. The doctor also noted that the veteran had symptoms dating back as early as 1958 and it was noteworthy that he was out of school for 4 months because of complaints of headaches, nightmares, and dizziness. The doctor also indicated that the veteran voiced similar complaints during service; however, he did not undergo sufficient diagnostic studies to diagnose the tumor until 1980. In another letter dated in March 1984, the veteran's surgeon, Dr. Marshall indicated that he, too, found it noteworthy that the veteran was out of school for 4 months in 1958; however, it was impossible to absolutely determine whether the brain tumor was present in 1958. Nevertheless, given the veteran's complaints of severe clumsiness, Dr. Marshall concluded that it was possible, although not absolutely certain, that the tumor was present in the 1950's. At a personal hearing before a Hearing Officer at the RO in January 1985, the veteran testified that he experienced symptoms during service which he believed were manifestations of his brain tumor, such as nausea, vomiting, dizziness, black-outs, loss of sense of taste and scent, nightmares and hallucinations. Additional private treatment records dated throughout the late 1980's, the 1990's, and this decade, continue to demonstrate treatment for residuals of a brain tumor and current disability associated with such, including residual cranial nerve deficits affecting the 4th, 5th, and 6th cranial nerves, partial complex seizures, sleep disorder, and in March 2003, the veteran developed severe left Bell's palsy. At his personal hearing in February 2004 before the undersigned Veterans Law Judge, the veteran testified that he consistently complained of the same symptoms of headaches, dizziness, nightmares, constipation, etc., beginning in 1958 and continuing until his surgery in 1980. The veteran testified that he consistently sought treatment for his complaints, and was frustrated that nobody would listen to him. At a VA examination in March 2005, the veteran reiterated his assertions regarding the likely onset of his brain tumor. The examiner noted a diagnosis of left frontotemporal neurilemoma and residuals from surgery. The examiner opined that the veteran did have manifestations of a brain tumor when he entered the service, given the veteran's complaints of headaches, dizziness and GI symptoms at that time, which the examiner explained were frequently part of the presentation of a person with a brain tumor. Additionally, the examiner indicated that the veteran's symptoms associated with the brain tumor probably progressed minimally during service. To support this conclusion, the examiner noted that the service medical records were sparse regarding complaints of symptoms that might be related to a brain tumor. The examiner reviewed the service medical records and noted only three entries that might relate to a brain tumor during his two years of service. Additionally, the examiner pointed to the fact that his symptoms did not manifest to a degree at which the brain tumor was diagnosed until eighteen years later, which indicated that it had to be a very slowly progressing lesion. The examiner summarized that the veteran's tumor was a very slowly progressing tumor that had nothing to do with him being in the service; however, the veteran did present with symptoms prior to service, and during service, which, in retrospect, were related to the tumor. The examiner concluded that it was more likely than not that the veteran had the tumor while he was in service; he presented with symptoms that were at least as likely as not related to the tumor when he entered service, and during service; and it was at least as likely as not that there was no increase beyond the natural progression of the disorder when he was in the service. In support of his claim, the veteran submitted a January 2006 private medical opinion from Dr. Craig N. Bash. Dr. Bash opined that the veteran's pituitary region neurilemoma tumor significantly advanced and progressed permanently during his military service. Dr. Bash indicated that the veteran had symptoms of brain tumor while in service which included visual symptom changes. More specifically, Dr. Bash noted that the veteran had normal vision on entry into service, but on discharge, the veteran noted having "eye trouble." Dr. Bash further indicated that, "Eye trouble very likely represents a serious major progression of symptoms, in this patient, because his pituitary region tumor, (as documented on MRI scans), even though slow growing, was likely responsible for his eye trouble during service because his record does not contain any other more likely cause and the tumor was growing very near the optic tracts and/or chiasm." Dr. Bash also felt that it should be noted that the veteran was currently blind in his left eye due to surgical removal of the tumor in 1980 and its location near the optic chiasm/radiations. Finally, Dr. Bash was certain that the veteran's tumor, more likely than not, did not predate his service because his symptoms were thought to be due to gastrointestinal diagnosis and he entered service with a normal physical. Upon further appellate review, the Board noted the conflicting opinions of the VA examiner and Dr. Bash, also noting that Dr. Bash primarily relied on the separation Report of Medical History on which the veteran indicated that he had experienced "eye trouble." In an attempt to clear up any uncertainty regarding this matter, the Board requested an independent medical expert (IME) opinion in August 2006, from a doctor specializing in neurology to answer the following questions: 1. Did the veteran have manifestations of a brain tumor when he entered service? 2. If the answer to question 1 is yes, did those symptoms undergo a permanent increase in severity during service, and if so, was the increase beyond the natural progression of the disorder? In answering this question, please address Dr. Bash's assertion that the veteran had a permanent vision loss during service which was related to the brain tumor. 3. If the answer to question 1 is no, were initial manifestations of a brain tumor shown during service, or within one year of the veteran's separation from service; and/or was the veteran's post- service brain tumor otherwise related to service? In November 2006, Dr. W, an associate professor of neurology from Howard University Hospital provided a response. Dr. W first summarized the medical evidence in the claims file, as already noted hereinabove. Next, Dr. W opined that the large, low/non-invasive tumor began growth before 1960. Dr. W also noted that during the veteran's service, the tumor's growth was evidently gradual and unremarkable. Dr. W indicated that there was no apparent reason to presume something worse. In response to Dr. Bash's opinion, Dr. W indicated that a documented visual acuity of 20/20 [at discharge] does not support a complaint of visual changes or worsening. Additionally, Dr. W referred to an August 2, 1979 report that notes, "vision Left eye blurry - started about 2 weeks ago." Finally, Dr. W indicated that the CT scan of the brain was first developed by Hounsfield in 1972-3. By 1980 it was a standard of care/assessment, but was unavailable for most of the years of growth of the veteran's tumor. Thus, in sum, the medical evidence in this case indicates that the veteran clearly suffered from symptoms of headaches, dizziness, lethargy, nightmares, weakness and gastrointestinal symptoms during high school in 1958, prior to service. This is supported by the veteran's own statements, statements of schoolmates, and teachers. According to the veteran, these symptoms continued throughout service, and for the following eighteen years, at which time, the veteran was diagnosed with a brain tumor. Diagnostic tests, medical and surgical reports, and subsequent post- operative treatment reports all note that the veteran's brain tumor was the extremely slow-growing type, and the veteran's doctors have agreed that the brain tumor probably pre-existed service, given the consistent and steady stream of symptoms reported by the veteran since 1958. Additionally, the VA opinion of March 2005 and the IME opinion of November 2006 also support a finding that the veteran's brain tumor pre- dated service. As noted above, when no preexisting condition is noted upon entry into service, as in this case, the veteran is presumed to have been sound upon entry. The burden then falls on the government to rebut the presumption of soundness by clear and unmistakable evidence that the veteran's disability was both preexisting and not aggravated by service. As to the first prong of this analysis, the Board finds that, given the medical evidence as noted hereinabove, the veteran's brain tumor clearly and unmistakably pre-existed service. This is based on lay statements regarding the veteran's symptoms beginning in 1958, supported by multiple doctor's opinions as noted above, which overwhelmingly support a finding that the veteran's brain tumor pre-existed service. In this regard, the Board notes that the veteran is competent to testify as to his experiences and symptoms. See Washington v. Nicholson, 19 Vet App 362 (2005), citing Layno v. Brown, 6 Vet. App. 465, 469-71 (1994) (holding that lay testimony is competent if it is limited to matters that the witness has actually observed and is within the realm of the witness' personal knowledge). The Board acknowledges Dr. Bash's January 2006 opinion letter in which he opines that the veteran's brain tumor did not pre-date service; however, this opinion is completely inconsistent with his own statement in that same opinion letter that, "the crux of this issue revolves around the question concerning a permanent increase in symptoms of this patient's brain tumor while he was in the service." If the brain tumor did not pre-date service, as Dr. Bash has concluded, then the crux of the issue in this case would involve the question of whether the brain tumor was incurred in service; not whether there was any increase in severity during service as Dr. Bash suggested. In fact, the question of whether the brain tumor increased in severity during service would be moot if the brain tumor did not pre-date service. Thus, Dr. Bash is essentially admitting that the brain tumor pre-existed service, yet he ultimately concludes that the tumor did not pre-date service. Furthermore, Dr. Bash reasoned that the brain tumor did not pre-date service because the veteran's pre-service symptoms were thought, by medical professionals, to be due to a gastrointestinal diagnosis. This argument is fatally flawed. While the medical evidence of record does indeed show that medical professionals, prior to service and during service, attributed the veteran's pre-service symptoms to a gastrointestinal diagnosis, they did so before anyone had any knowledge that the veteran had a brain tumor. Doctors since that time have agreed, in hindsight, that it is likely that the veteran's symptoms in 1958 were manifestations of a brain tumor. It would have been impossible to opine otherwise prior to 1980 because the existence of a brain tumor was not known prior to that date. In other words, the fact that the veteran's symptoms prior to service may have been attributed to a gastrointestinal diagnosis at that time does not, on its face, discount a future opinion that is proffered on the basis of a more complete record which includes additional pertinent medical evidence, in this case the existence of a slow-growing brain tumor. Thus, Dr. Bash's argument that the veteran's brain tumor did not pre date is completely without merit. The Board now turns to the second prong in the analysis; whether there is clear and unmistakable evidence that the veteran's pre-existing brain tumor was aggravated during service. The government may show a lack of aggravation by establishing that there was no increase in disability during service or that any "increase in disability [was] due to the natural progress of the" preexisting condition. 38 U.S.C.A. § 1153. If this burden is met, then the veteran is not entitled to service-connected benefits. The evidence in this case clearly shows that the veteran's brain tumor was slow growing. This fact is undisputed, and there is no opinion to the contrary. In addition, various medical professionals have opined that the veteran's pre- existing brain tumor did not undergo an increase in severity; or, if there was any increase in severity, symptoms supporting such an increase are not shown during service. Moreover, the VA examiner in March 2005 and the IME doctor of November 2006 both opined that there was no increase in severity of the veteran's slow-growing tumor during service. In fact, the VA examiner in March 2005 also noted that the veteran's brain tumor had nothing to do with the veteran being in service. In other words, there was no event or injury in service that could be attributed to the brain tumor. Likewise, Dr. W, the IME doctor, also determined, based on a review of the entire record, that the growth of the tumor during service was gradual and unremarkable, and there was no apparent reason to presume something worse. In addition, and in response to Dr. Bash's opinion that the veteran's visual changes during service were a clear indication of a significant worsening of the brain tumor during service, Dr. W explained that a documented visual acuity of 20/20 (which is noted on the veteran's separation examination in 1962) did not support a complaint of visual changes or worsening. Thus, although Dr. Bash is convinced that the veteran had significant visual changes during service, no such visual changes are found in the record. As noted above, the veteran noted on his discharge examination that he had experienced "eye trouble" which he did not note on his Report of History at induction. Nevertheless, there is nothing in the record which clarifies to what type of eye trouble the veteran is referring, or the severity of the claimed eye trouble, or whether the veteran was simply including "eye trouble" along with his other symptoms of dizziness, gastrointestinal symptoms, and the like. Dr. Bash, has evidently concluded, without any supporting documentation or evidence, that the veteran's claim of "eye trouble" on his Report of History at discharge represents a "significant" increase or progression of symptoms. While "eye trouble" noted in 1962 could very well represent, along with the other noted symptoms, manifestations directly related to the brain tumor, there is no evidence in the record to support a finding that that particular notation represents a significant increase in severity of symptoms during service, particularly given the lack of complaints during service. Thus, once again, Dr. Bash's opinion is without merit. Certainly it is possible, and perhaps likely, that the veteran's pre-existing brain tumor progressed, or grew, during service; however, there appears to be no measurable growth during that time. A measurable increase in symptoms is not shown during service, and the post-service medical x- rays and EEG testing from 1969 revealed a normal skull. Thus, any increase in severity during service, nearly seven years earlier than the 1969 diagnosis of "normal skull" would not likely have been significant or beyond the natural progression of the disease. Additionally, an actual diagnosis of a brain tumor was not made until 1980, many, many years after discharge from service. Moreover the VA examiner in 2005 and Dr. W in November 2006 found no evidence in the record to support a finding of an increase in severity during service beyond the natural progression of the disease. As such, the Board finds that the veteran's pre-existing brain tumor clearly and unmistakably did not permanently increase in severity beyond the natural progression of the disease, and therefore there was no aggravation of a pre- existing brain tumor during service. In light of the foregoing, the presumption of soundness at entry is rebutted by clear and unmistakable evidence showing that the veteran had a pre-existing brain tumor that was not aggravated by service. As such, the criteria of service connection are not met in this case, and the claim must fail. Finally, as noted hereinabove, the veteran has consistently argued that the military should be held responsible for not discovering the veteran's brain tumor during service. In other words, the veteran argues that the military should have been more responsive to his complaints of symptoms during service. To some extent, the veteran appears to be raising an argument couched in equity. The Board is certainly mindful of the current severity of the veteran's residuals of his brain tumor due to the large size, and, while certainly sympathetic to the veteran, the Board is nonetheless bound by the law and is without authority to grant benefits on an equitable basis. See 38 U.S.C.A. §§ 503, 7104 (West 2002); Harvey v. Brown, 6 Vet. App. 416, 425 (1994). The Board has decided this case based on its application of this law to the pertinent facts. See Owings v. Brown, 8 Vet. App. 17 (1995), quoting Kelly v. Derwinski, 3 Vet. App. 171 (1992) (noting that the Court must interpret the law as it exists, and cannot extend benefits out of sympathy for a particular claimant). The Board also notes that the brain tumor was not only not discovered during service; but it was eighteen years after discharge from service before the tumor was finally discovered. Thus, there remains a large gap of nearly two decades between discharge from service and an actual diagnosis, during which time other private providers were also unable to make the diagnosis. As the preponderance of the evidence is against the claim, the "benefit-of-the-doubt" rule does not apply, and the Board must deny the claim. See 38 U.S.C.A. § 5107(b) (West 2002); Gilbert v. Derwinski, 1 Vet. App. 49 (1990). ORDER The claim of service connection for residuals of a brain tumor, status post left frontal temporal craniotomy, is denied. ____________________________________________ HOLLY E. MOEHLMANN Veterans Law Judge, Board of Veterans' Appeals Department of Veterans Affairs