A smooth, solid or cystic fibroepithelial (FIBROEPITHELIAL NEOPLASMS) tumor, usually found in the OVARIES but can also be found in the adnexal region and the KIDNEYS. It consists of a fibrous stroma with nests of epithelial cells that sometimes resemble the transitional cells lining the urinary bladder. Brenner tumors generally are benign and asymptomatic. Malignant Brenner tumors have been reported.

Brenner tumor of borderline malignancy.

Synonyms: Proliferative Brenner Tumor, Brenner Tumor, Brenner Tumor, Malignant, Brenner Tumor, Benign, Benign Brenner Tumor, Ovary Brenner Tumor, Ovarian Brenner Tumor, Brenner Tumor, Proliferative, Brenner Tumor of Ovary, Malignant Brenner Tumor