[Case report: a foreign body (gauze) in the bladder].

A case of bladder tamponade caused by a foreign body (gauze) in the bladder of a 24-year-old man is reported. He had been treated with the Lambotte wire and screw to repair his pubic bone fracture caused by a traffic accident. About one year later, the wire and screw were removed from the patient. However, he suffered from gross hematuria and bladder tamponade on the 11th day after the 2nd operation, and he was transferred to our outpatient department on emergency. Further urological examinations were done for this case. The patient was diagnosed as having bladder tamponade caused by a foreign body, a gauze, in the bladder. Among these examinations NMR-CT gave us the most interesting and useful findings. NMR-CT showed that the gauze penetrated the bladder wall.