14-year-old female with history of multiple renal cysts identified on prior MRI. KIDNEYS  Cortical Echogenicity: Normal   Medullary Echogenicity: Normal   Pelvicaliceal System -- SFU Grade*  Right: 0 Left: 0  Length*** Right: 11.6 cm Left: 10.1 cm   Mean for age: 9.9 cm  Range for age: 8.6 - 11.1 cmADDITIONAL OBSERVATIONS: There is a well-defined hypoechoic lesion within the mid pole of the right kidney, which measures up to 7 mm in diameter. Multiple hypoechoic lesions are also identified within the left kidney. The largest is located in the left lower pole and measures 1.7 x 1.0 cm x 1.6.
The left kidney is slightly enlarged. Multiple cystic lesions within the kidneys do not appear significantly changed from those seen on the prior MRI.*SFU grading system: Grade 0: No hydronephrosis. Grade 1: The renal pelvis is visualized. Grade 2: A few but not all of the calices are identified in addition to the renal pelvis. Grade 3: Virtually all the calices are seen. Grade 4: Grade 3 and parenchymal thinning.Fernbach SK, Maizels M, Conway JJ. Ultrasound Grading of Hydronephrosis: Introduction to the System used by the Society for Fetal Urology. Pediatric Radiology (1993) 23: 478-480.***Rosenbaum DM, Korngold E, Teele RL. Sonographic Assessment of Renal Length in Normal Children. AJR Am J. Roentgenol (1984) 142:467-469