Image Description
The tunica albuginea is thickened and shows variably sized tubules and dilated cystic spaces embedded in stroma. The tubules/cystic spaces are lined by flattened, cuboidal, or ciliated columnar epithelium. There is no appreciable cytologic atypia or mitotic activity. The stroma is focally dense, especially around the glands/cystic spaces and resembles ovarian-type stroma. Like their counterparts in female patients, these ovarian-type epithelial tumors often express estrogen and progesterone receptors.
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.