a small benign tumor of the male epididymis and female genital tract, consisting of fibrous tissue or smooth muscle enclosing anastomosing glandlike spaces containing acid mucopolysaccharide lined by flattened cells that have ultra-structural characteristics of mesothelial cells. Syn: adenofibromyoma, adenoleiomyofibroma, angiomatoid tumor, benign mesothelioma of genital tract, Recklinghausen’s tumor.