Tumor de Brenner benigno bilateral asociado a cistadenoma mucinoso. Una aproximación a los tumores de células transicionales del ovario

Transitional cell tumours constitute a rare group of ovarian epithelial neoplasms, first described in 1932 and still the subject of many studies to determine their histogenesis and endocrine activity. They are classified into two distinct clinicopathological categories: Brenner tumours (benign, borderline or proliferative and malignant) and transitional cell carcinoma. We report a case of a large, bilateral benign Brenner tumour associated with mucinous cystadenoma in a 54 year old woman with a history of breast carcinoma. The main clinical and pathological features of transitional cell ovarian tumours are described and their association with mucinous tumours is discussed.