Single Judge Application; reason and bases; Dela Cruz v. Principi, 15 Vet.App. 143, 149 (2001); failure discuss all the evidence favorable to a claimant; Gabrielson v. Brown, 7 Vet.App. 36, 40 (1994); the Board cannot “evade [its] statutory responsibility [to state the reasons or bases for its conclusions] merely by adopting [a medical opinion] as its own” where the medical opinion “fails to discuss all the evidence which appears to support [the] appellant’s position.” Gabrielson v. Brown, 7 Vet.App. 36, 40 (1994). Gabrielson does not require that a medical opinion discuss all the evidence favorable to a claimant, only that the Board, in relying on an opinion that does not do so, discuss any additional favorable evidence to comply with its duty to provide an adequate statement of reasons or bases for its decision. See id.; 38 U.S.C. § 7104(d)(1); see also Dela Cruz v. Principi, 15 Vet.App. 143, 149 (2001) (holding that, although the Board must consider all of the evidence of record, “a discussion of all evidence is not required when . . . the Board has supported its decision with thorough reasons or bases regarding the relevant evidence”);