34-year-old male patient with left flank pain. History of left renal cyst. RIGHT KIDNEY: The right kidney measures 11.5 cm in length. No evidence of hydronephrosis. There is a 1.6 x 1.1 cm right lower pole simple renal cyst.LEFT KIDNEY: The left kidney measures 12.7 cm in length. There is no evidence of hydronephrosis. There is a 5.1 x 3.1 cm complex left lower pole renal cyst.URINARY BLADDER: No significant abnormalities noted.OTHER: No significant abnormalities noted.
Complex left lower pole renal cyst which may represent multiple cysts or a single cyst with multiple septations; further evaluation with MRI is suggested.