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Am J Surg Pathol. 1985 Feb;9(2):87-94.

Juvenile granulosa cell tumor of the infantile testis. A report of 14 cases.


Fourteen testicular tumors diagnosed in infants less than 6 months of age had a distinctive appearance resembling that of the juvenile granulosa cell tumor of the ovary. One of them was discovered at autopsy in an infant of 30 weeks' gestational age; seven were diagnosed during the first few days of life, and the remainder between 3 weeks and 4 1/2 months of age. Enlargement of a scrotal testis was the presenting manifestation in 10 cases and abdominal swelling in one case; one tumor was found in a descended testis that had undergone torsion and one was discovered in an inguinal testis at the time of inguinal herniorrhaphy. The tumors ranged from 0.8 to 5.0 cm in diameter and were cystic or partly cystic and partly solid. Microscopic examination disclosed both follicular and solid components. The follicles were of varying sizes and contained eosinophilic or basophilic fluid that stained positively for mucin in some of the cases. The solid foci typically had a nodular arrangement and occasionally were hyalinized or had a basophilic background due to the presence of intercellular mucin. The neoplastic cells contained moderate to large amounts of eosinophilic cytoplasm and round to oval hyperchromatic nuclei, which typically lacked grooves. The mitotic rate varied from less than 1-24/10 high-power fields. Limited follow-up examination revealed no evidence of recurrence. The microscopic features of these neoplasms warrant their designation as "juvenile granulosa cell tumor."

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