Gynaecology & Obstetrics Risk for postnatal urinary abnormality is severe if Renal pelvic dilatation is —– in third trimester? A 4 to < 7mm B 7 to < 9mm C 9 to <= 15mm D > 15mm 💡 Explanation Risk for postnatal urinary abnormality is severe if Renal pelvic dilatation is ----- in third trimester? ✓ Correct Answer: D. > 15mm