Image Description
Adenomatoid is the most common paratesticular tumor. It usually arises in the epididymis (seen on the left in this image). Other structures that may be involved include testicular tunics and the spermatic cord. The tumor is composed of solid nests, glandular spaces, and tubules lined by flattened or low cuboidal cells.
About the Disease
Benign tumors of testicular adnexa include adenomatoid tumor (most common tumor of the epididymis), lipoma (most common tumor of the spermatic cord), papillary cystadenoma of the epididymis, leiomyoma, rhabdomyoma, hemangioma, lymphangioma, aggressive angiomyxoma and paraganglioma. Fibrous pseudotumor and smooth muscle hyperplasia of the testicular adnexa are entities reported in this region that mimic neoplasia clinically. Ovarian-type epithelial tumors (serous, mucinous, Brenner, endometrioid, and clear cell types) have also been described in paratesticular tissues.