D. S., a white man, aged 22, entered Milwaukee County Hospital complaining of an impaction of a self-inserted, soft rubber urethral catheter. The family history was unimportant. The patient denied any venereal disease or unusual sexual practices. He stated that on one occasion, one year before, for no apparent reason, he found himself unable to void, and was relieved by catheterization by a physician. There had been no subsequent trouble until the present illness. Aug. 23, 1922, without apparent cause, he was again unable to void, and after a continence of twelve hours, the discomfort of a distended bladder impelled him to insert a rubber tubing and empty the bladder. He could not withdraw the rubber tube. It seemed solidly fixed, and the slightest traction resulted in agonizing pain in the region of the bladder neck. Becoming alarmed, he consulted a physician, who made several attempts to withdraw the tube,