Entitlement to service connection for a left shoulder disability, to include as secondary to a service-connected disability, is denied.

Board reasoning

The Board concluded that the Veteran’s left shoulder and lumbar spine disabilities are not etiologically related to service nor caused or aggravated by a service-connected condition. Relying on recent addendum opinions, the Board found no objective evidence in service records of these conditions, and determined post-service development and medical literature did not support service causation or secondary causation. The lay assertions of in-service onset and continuity were deemed not persuasive given the lack of contemporaneous treatment and inconsistencies with reserve records.