This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Polycystic Kidneys, Subject name: Medicine
The gross specimen section of kidney depicts: 
Select and explain. 
A. Renal cell carcinoma, B. Medullary cystic kidney, C. Polycystic kidney, D. Hydatid cyst
C: Polycystic kidney
Answer: C: Polycystic kidney 
Explanation: The specimen shows an enlarged kidney with cysts of varying sizes in both coex and medulla. Minimal normal kidney tissue is present and there is a complete loss of coicomedullary gradient. Choice B is ruled out as it has small shrunken kidneys. The gross specimen section of kidney depicts : Polycystic kidney Gross specimen differentiating features Very large kidneys, mass of cysts of varying sizes with no intervening parenchyma. Cysts are filled with fluid, which may be clear, turbid, or hemorrhagic