NCIt definition : A rare, benign sex cord-stromal tumor that arises from the testis. It is the most
frequent congenital testicular neoplasm and is usually diagnosed during the perinatal
period. It usually presents as an asymptomatic scrotal or abdominal mass. Morphologically,
it is characterized by the presence of cysts that are lined by cells resembling granulosa
and theca cells.;
Alternative definition : NICHD: A rare sex cord-stromal tumor that arises from the testis.;