This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Polycystic Kidney Disease, Subject name: Pathology
[{'content': 'All of the cystic diseases of kidney cause enlargement of kidney/renomegaly, except: \nSelect and explain. \nA. Autosomal dominant polycystic kidney disease (ADPKD), B. Autosomal recessive polycystic kidney disease (ARPKD), C. Nephronophthisis, D. Multicystic renal dysplasia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Nephronopthisis Kidneys are small, have contracted granular surfaces, show cysts in the medulla, at the coicomedullary junction. Children with juvenile nephronophthisis have extrarenal manifestations, which most often appear as retinal abnormalities, including retinitis pigmentosa, and even early-onset blindness in the most severe form', 'role': 'assistant'}]