A 63-year-old male experienced pain in the epigastric region and a septic fiver. X-ray examinations showed a tumor-like process in the lower part of the left kidney with some concrements. Upon operation a nodular inflammatory tumor was found, occupying more than two-thirds of the left kidney. Histologic examination revealed a typical cholesteatoma of the renal pelvis and calyces with some concrements among the abundant keratin material.
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