Adult-type granulosa cell tumor of the testis: A case report and review of the literature.

Granulosa cell tumors (GCTs) of the testicle are a rare subtype of sex cord stromal tumors which usually present with painless testicular swelling. The histology of an adult testicular GCT often resembles normal granulosa cell tissue morphology, with similar immunohistochemical staining pattern such as positivity for steroidogenic factor 1 (SF1), calretinin, and inhibin A. We present a case of a 39-year-old male with an adult GCT of the testicle who underwent successful unilateral orchiectomy. This case adds to the body of literature and furthers our understanding of tumor histopathology, tumor behavior, clinical surveillance, and treatment strategies for this testicular neoplasm.