XXXX and impaired spermatogenesis in a Holstein Friesian @entity291 .

@entity1 @entity172 @entity251 @entity5 @entity2970 @entity291
UNASSIGNED: Yolk sac @entity5 are testicular germ-cell @entity5 of the non-seminoma type. In @entity291 , this @entity5 is very rare and to date has only been described three times. In @entity1 males, it usually occurs in @entity1 and @entity1 . Immunohistochemistry provides solid criteria for diagnostics. Especially present pathognomonic Schiller-Duval bodies are helpful for identification. In this report, a 32-day-old Holstein Friesian @entity291 presented with a highly enlarged right testis. Sonographic examination was performed and blood samples were taken to measure @entity251 and @entity172 levels. Furthermore, the testis was surgically removed and macroscopically, histologically, and immunohistochemically examined which lead to the diagnosis of @entity2970 . The second testis was descended until the age of nine months and histology revealed impaired spermatogenesis. This report provides the first sonographic images of @entity291 @entity2970 as well as the first information about hormone levels in @entity291 with this @entity5 . It also shows the importance to combine anamnesis, histomorphological, and immunohistochemical findings in order to diagnose yolk sac @entity5 when pathognomonic structures are not present.
