Adenocarcinoma of rete testis.

Adenocarcinoma of the rete testis is a very rare malignant neoplasm originating in the epithelium of the rete testis. Histologically, it appears as a papillary adenocarcinoma. The first case was reported in the literature in 1853 and since that time only 16 additional cases have been reported. This report represents the eighteenth case.