Juvenile Type Granulosa Cell Tumor

A granulosa cell tumor occurring in the ovary and testis. In females it occurs predominantly in the first three decades of life and presents unilaterally as stage I disease in the vast majority of cases. It is characterized by the presence of granulosa cells forming macrofollicular structures. The majority of cases have a good prognosis. In males it represents the most frequent congenital testicular neoplasm and the vast majority of cases occur in the perinatal period. It presents as a scrotal or abdominal mass and it more often affects the left testis. Approximately 20% of the patients have ambiguous external genitalia. It is characterized by the presence of cystic spaces lined by granulosa cells and cells resembling theca cells. Metastases have not been reported. (NCI Thesaurus)

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