Dermoid cyst indenting bladder: a diagnostic dilemma

A dermoid cyst is a benign cutaneous developmental anomaly that arises from the entrapment of ectodermal elements along lines embryonic closure. These tumors are lined by stratified squamous epithelium with mature skin appendages found on their wall and lumens filled keratin, hair, teeth etc. They usually in nature. Mature ovarian cysts very common accounting for 25% all neoplasms. Uncomplicated asymptomatic easy to diagnose imaging. Presentation extremely rare urinary bladder it diagnostic challenge gynecologist, pathologist urologist. Only few cases documented till now. We present an case involving 29 year old female who presented chief complaint pain abdomen associated passage hair through urine since 2 months. Her cystoscopy showed presence caseous material surface lesion.