7-year-old female with history of solitary right kidney and hydronephrosis BLADDER  Wall Thickness: The bladder is incompletely distended, but appears upper limits of normal in thickness. Contents: Incompletely distended. Distal Ureter -- SFU Grade**  Right: 0   Ureteral Jets Right: Not observed KIDNEYS  Cortical Echogenicity: Normal   Medullary Echogenicity: Corticomedullary differentiation is normal in all but the posterolateral right lower pole   Pelvicaliceal System -- SFU Grade*  Right: 1  Length*** Right: 7.6 cm  Mean for age: 8 cm  Range for age: 7 - 9 cmADDITIONAL OBSERVATIONS: None
Solitary right kidney with grade 1 dilation. Persistent focal cystic dysplasia or segmental multicystic dysplasia in the lower pole.*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. **SFU grading system retrovesical ureter: Grade 0: No ureteral dilatation. Grade 1: Ureter less than 7 mm. Grade 2: Ureter is 7-10 mm. Grade 3: Ureter is over 10 mm. 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