Schematic diagram of ureteropelvic obstruction that demonstrates the location of a functional or anatomical abnormality resulting in renal pelvic dilatation.
Reproduced with permission from: Baskin LS, Kogan BA. Handbook of Pediatric Urology, 2nd ed, Lippincott Williams & Wilkins, Philadelphia 2005. Copyright © 2005 Lippincott Williams & Wilkins.
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