A rare entity of benign bladder neoplasm: female lipoma.

Although benign bladder neoplasms constitute less than 5% of all bladder neoplasms, they should be taken into consideration because they can be symptomatic, and have the risk of confusing with other malignant neoplasms. Herein, we reported a 59-year-old female patient consulted to our outpatient clinic with the incidents of hematuria. During cystoscopic examination, a yellow-coloured mass lesion with smooth contours on the right posterolateral wall of the bladder was observed. Histopathological examination of the specimen demonstrated mature adipose tissue contained within submucosal layer without bladder wall invasion. Bladder lipomas are rarely seen pure benign masses which almost all reported ones were men. We think that female cases should also be taken into consideration for differential diagnosis presenting with hematuria.