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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Medullary cystic disease of the kidney is best diagnosed by:
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The correct answer is  Answer is D (Biopsy): Although ultrasonography and CT scan can be useful in making a diagnosis of medullary cystic disease, an open renal biopsy that ensures recovery of tissue from the coicomedullary junction is definitive.