Documents Antenatal Hydronephrosis. Definition: AP diameter renal pelvis > 4mm @ 20 wk EGA AP diameter renal.....

Slide 1 Antenatal Hydronephrosis Slide 2 Definition: AP diameter renal pelvis > 4mm @ 20 wk EGA AP diameter renal pelvis > 7mm @ 30 wk EGA Incidence: 5% of pregnancies…