[Iatrogenic foreign body].

Three cases of iatrogenic foreign bodies are described. In case 1 a large stone was removed from the urinary bladder of a 80-year-old man 8 years after suprapubic prostatectomy. The concrement contained a fragment of the gauze tampon left during that operation. In case 2 a surgeon trying to stop a profuse hemorrhage lost a surgical needle in paraurethral tissues above the urinary bladder of an elderly man undergoing prostatectomy. Because of the foreign body the patient developed complications: scarry obliteration of the bladder neck, concrement, a vesical fistula, chronic cystitis and chronic pyelonephritis. In case 3, the Dormia's basket broke with ureteral perforation and the metal fragments penetrated into the paraureteral fat in a 46-year-old woman undergoing ureterolithoextraction. 11 months later, the fragment migrated into the bladder wall and perforated it. The fragment was removed endoscopically.