Imaging of urinary tract in children in different clinical scenarios: a guide for general radiologists

Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Urinary tract dilatation grading system

Grading	APRPD	Central calyces	Peripheral calyces	Parenchymal thickness	Parenchymal appearance	Ureters	Bladder	Risk
Normal	Less than 10 mm	Normal	Normal	Normal	Normal	Normal	Normal	N/A
UTD P1	10–< 15 mm	Dilated	Normal	Normal	Normal	Normal	Normal	Low
UTD P2	≥ 15 mm	Dilated	Dilated	Normal	Normal	Dilated	Normal	Intermediate
UTD P3	≥ 15 mm	Dilated	Dilated	Abnormal	Abnormal	Dilated	Abnormal	High