True about Brenner tumor:a) Usually bilateralb) Resembles fibromac) Accounts for 20% of all ovarian tumorsd) Common in postmenopausal age group

Brenner tumour is also called as Transitional cell tumour: • It is a rare epithelial neoplasm of ovary resembling fibroma. • It is an essentially benign tumour. • Tumour is generally seen in women around menopause and is generally unilateral. • Cause menopausal bleeding and Pseudomeig syndrome (ascites and hydrothorax). • Malignant change is very rare. • Histologically it shows walthard cell rests of transitional cellsQ, cells have coffee bean nuclei, cut section is gritty.