RADIOLOGY: GENITOURINARY: GU: Case# 33599: PELVIC KIDNEY OBSTRUCTED ?ENDOMETRIOMA. 33 year old female with abdominal pain. 1. Obstructed left pelvic kidney with rupture of the collecting system. The level of obstruction appears to be the 3 cm cystic structure at the level UVJ which may represent a structure separate from the ureter, such as an endometrioma in this patient with a history of endometriosis. The finding should not represent ovary as the patient has had her uterus and both ovaries removed. 2. No evidence of an obstructing renal calculus, althought there are several phleboliths in the pelvis.