Radiology ‘Rim’ and ‘ball’ nephrograms in intravenous urography are seen in – A Normal kidneys B Acute obstructive nephropathy C Chronic obstructive nephropathy D Chronic renal failure 💡 Explanation 'Rim' and 'ball' nephrograms in intravenous urography are seen in – ✓ Correct Answer: C. Chronic obstructive nephropathy