[Epididymal tumor in a six-months-old infant]

A rare tumor of the epididymis was discovered in a 6-month-old infant. Macroscopically, the tumor had a black focal color. Immunohistochemistry staining and electron microscopy led to the diagnosis of mealnotic neuroectodermal tumor, or progonoma. Prognosis of progonoma, a benign tumor, is generally good, but malignant transformation has been reported.