Abstract
Four cases of bladder foreign body were reported. In all cases, onanism was motives from which they inserted foreign bodies into the bladder. First two cases had the bladder calculi might be formed by the bladder foreign bodies.
Case 1: -A 21 years old male had a piece of metal wire in the bladder for almost 10 years which introduced through the urethra. The bladder stone removed through suprapubic vesicotomy sized 7.0×4.5×4.0cm.
Case 2: -A 26 years old male had a bladder stone produced by the pin like needle which might be introduced almost 10 years ago. A stone removed transvesically sized 4.0×4.0×4.3cm.
In these 2 cases, the ureters were definitely dilated and vesico-ureteral refluxes were visualized in X-ray examiations.
Case 3: -A 14 yers old male inserted a candle into the bladder due to onanism. This was visualized to be broken into several pieces by the cystoscopic examination and was removed with the endoscopic technique.
Case 4: -This 34 yers old male stated that he inserted a fine elastic string 15 cm in length into the bladder accidentally. Despite it had been in the bladder only for 20 days, massive urine crystals attached around the elastic string. It succeeded to withdraw by transurethral approaches.
