Empyema of the Ureteral Stump after Nephrectomy Mimicking Pyosalpinx or Pelvic Cystic Tumor: Report of Two Cases

Empyema of the ureteral stump following a nephrectomy is a rare disease. We report on two cases of ureteral stump empyema in female patients who presented with a cystic mass in the pelvic cavity and a past history of a nephrectomy. CT and radiological findings indicated that the cystic lesion was a ureteral stump lesion, and was surgically proven as ureteral stump empyema in both cases.