Renal replacement lipomatosis as a rare presentation of long-standing nephrolithiasis.

Renal replacement lipomatosis (RRL), as described by the word, is characterized by abnormal proliferation of the fatty tissue and replacement of renal parenchyma by fat with atrophy of renal parenchyma. This rare condition is mainly attributed to a long-standing disease such as lithiasis. The patient usually presents with non-specific abdominal pain of chronic duration, and imaging is necessary to confirm the diagnosis. Here, we present the case of total RRL presented at our center, diagnosed with ultrasonography, and computerized tomography of kidneys, along with contributing factors and its course of treatment.