Male; 55 years old. Reason: stones Supernumerary kidneys fused at the midline.RIGHT KIDNEY: The right superior kidney measures 10.8 cm in length. Renal cortex is normal in echogenicity. At least two nonobstructing, shadowing stones with twinkle artifact are seen in the right kidney. The largest measures 0.6 cm. There are two collecting systems on the right, the inferior collecting system is prominent similar to CT. In the inferior aspect of the right duplicated inferior kidney is a 2.4 x 1.7 x 1.8 cm hypoechoic lesion with some internal echoes, a septation, and no internal flow on color Doppler. This corresponds to the lesion seen on recent CT.LEFT KIDNEY: The left superior kidney measures 14.6 cm. The renal cortex is normal in echogenicity. There are two collecting systems. There is no hydronephrosis or shadowing renal stone on the left.BLADDER: The bladder is nondistended.
1.Supernumerary kidneys fused at the midline.2.At least 2 nonobstructing stones on the right. Prominent inferior right collecting system, similar to prior CT exam, no significant hydronephrosis otherwise.3.2.4 cm hypoechoic lesion in the inferior right duplicated kidney corresponds to the lesion seen on recent CT. This is indeterminant on ultrasound and may be further evaluated with MRI if clinically warranted.