UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 1062
Question:
A 70 year old diabetic has chronically deteriorating renal function. An intravenous urogram reveals ring shadows and filling defects within dilated calyces. The most likely diagnosis is

a) pelvi-ureteric obstruction
b) horse-shoe kidney
c) medullary sponge kidney
d) renal tuberculosis
e) renal papillary necrosis