Caused by the presence of calculi that migrate from the bladder into the urethra (urolithiasis), exerting pressure on the wall with subsequent ischemic necrosis. Subcutaneous infiltration of urine in the posterior ventral abdominal region, involving the prepuce. On palpation, the area is cold and pitting on pressure. Differential diagnosis with traumatic hematomas or inflammatory phlegmons (warm). Treatment: low urethrostomy or high urethrostomy. Guarded prognosis.
