From contraception to urolithiasis: Migration of a contraceptive device into the urinary bladder lumen.

Intrauterine devices (IUDs) are widely used and generally safe contraceptives, though rare complications such as migration into adjacent organs may occur. We present a 34-year-old woman with suprapubic pain, dysuria, intermittent hematuria, and fatigue. Ultrasound revealed a bladder foreign body, further confirmed by multislice CT as an IUD. Cystoscopy demonstrated partial bladder wall embedding with stone encrustation. The device was successfully removed transurethrally. This case highlights the importance of considering IUD migration in women presenting with unexplained urinary tract symptoms and emphasizes the role of early imaging and endoscopic intervention in preventing long-term complications.