@entity4797 arising in @entity1 with @entity252 is extremely rare; to our knowledge, only three cases have been reported in the English language literature. We report a case of @entity4797 in a 39-year-old @entity1 with @entity252 . Gross examination revealed that the @entity5 was a solid and irregular mass measuring 90 mm in diameter. The cut surfaces of this ill-defined @entity5 were yellow-white with @entity39 foci. Histologically, the @entity5 cells were separated into lobules by branching, fibrous septa containing lymphocytes. In some parts of the @entity5 , a cord-like arrangement of @entity5 cells was present. Immunohistochemically, the @entity5 cells were strongly and diffusely positive for antiplacental alkaline phosphatase antibody along their cytoplasmic membranes, but negative for both chorionic gonadotrophin and @entity160 . Based on these findings, we diagnosed this @entity5 as a @entity4797 . The testes when examined were found to be @entity3202 bilaterally, but with no @entity5 lesions. Chromosomal analysis yielded a 47XXY karyotype, compatible with @entity252 . These findings indicate a case of primary @entity4797 in @entity252 . The @entity1 underwent intensive radiation therapy postoperatively, and he demonstrated no evidence of recurrence or @entity3 during the 13-month period following surgery.

@entity4797 in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient', 'man'] @entity39 :: ('MESH:D009336', 'Disease') :: ['necrotic'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity3202 :: ('MESH:D016109', 'Disease') :: ['atrophic'] @entity252 :: ('MESH:D007713', 'Disease') :: ["Klinefelter's syndrome"] @entity160 :: ('174', 'Gene') :: ['alpha-fetoprotein'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis'] @entity4797 :: ('MESH:D018239', 'Disease') :: ['Seminoma', 'intrapelvic seminoma', 'seminoma']
@entity252 :: (MESH:D007713,Disease) :: ['Klinefelter's syndrome']
