Six-year-old male with history of hydronephrosis BLADDER  Wall Thickness: Irregular bladder wall without significant thickening.  Contents: Debris is again seen with in the bladder appearing similar to the prior exam. Distal Ureter -- SFU Grade**  Right: 3  Left: 0   Ureteral Jets Right: Not observed  Left: Not observedKIDNEYS  Cortical Echogenicity: Poor corticomedullary differentiation, appearing similar to the prior exam   Medullary Echogenicity: Poor corticomedullary differentiation, appearing similar to the prior exam  Pelvicaliceal System -- SFU Grade*  Right: 3 Left: 0  Length*** Right: 10.0 cm Left: 4.6 cm   Mean for age: 7.8 cm  Range for age: 6.5 - 9.3 cmADDITIONAL OBSERVATIONS: Small atrophic left kidney is visualized with a hypoechoic structure measuring 1.1 x 0.8 x 0.6, which appears multicystic. This may represent an involuted multicystic dysplastic kidney. Atrophic kidney with cystic structures is seen on MRI dated 7/28/11.
1.Persisting right grade 3 pelvicaliceal dilatation with increasing hydroureter. 2.Small atrophic left kidney with a small multicystic structure. This may represent an involuted multicystic dysplastic kidney.*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