[Melanotic progonoma]

A case of melanotic progonoma detected in an infant is presented. Microscopically, the tumor was found to consist of a rough fibrous connective tissue stroma with groups of minor monomorphic lymphocyte-like cells and glandular-like cavities that were lined with melanin-containing hyperchromatic rounded and flattened epithelioid cells. The tumor occurs rarely and is a matter of some difficulty in its histologic diagnosis.