Main Menu Pathology | Testis III - [click on image(s) below] Granulosa Cell Tumor Adult form: most common form presents as testicular mass without endocrine symptoms Micro: characteristic feature is ring-like or rosette-like arrangement of cells (Call-Exner bodies) 10% metastasize Juvenile form: occurs in infants < 6 months of age may be associated with cytogenetic abnormalities of the Y chromosome and ambiguous genitalia some tumors may develop in undescended testes