Brenner tumor is a rare ovarian neoplasm that is seen in women of the fifth to sixth decade. Classified as benign, borderline, and malignant, these tumors may be associated with estrogen production, thus altering the estrogen-progesterone ratio. High estrogen stimulates the endometrium and this is responsible for producing various pathologies, namely, hyperplasia, atypia, and carcinoma. Very fe...

Ovarian neoplasms are a heterogeneous group of tumors with varying incidence in the general population. The most common are the surface epithelial tumors which include transitional cell tumors. Transitional cell tumors include both transitional cell carcinoma and Brenner tumor. The vast majority of Brenner tumors are benign, often incidental findings; however, malignant Brenner tumors (MBT) do ...

We report here an extremely rare case of proliferative Brenner tumor with borderline mucinous cystadenocarcinoma of the ovary, metastasizing to the pleura in a 75-year-old woman. Massive pleural effusion were present due to metastasis and pseudo-Meigs’ syndrome. The cytological findings from pleural effusion, ascites and tumor imprint were similar, suggesting mucus-producing malignant tumors. A...