Projects

Renal replacement lipomatosis is a rare benign entity, characterized by diffuse replacement of renal parenchyma,
sinus and hilum with adipose tissue resulting in renal parenchymal atrophy. Etiology may be secondary to
obesity, cushing’s syndrome, corticosteroid excess or idiopathic. Renal replacement lipomatosis is usually
secondary to renal calculus and renal tuberculosis, occasionally occurs after renal infarction and is frequently
associated with xanthogranulomatous pyelonephritis. CT provides a definitive diagnosis of renal replacement
lipomatosis and is considered superior to ultrasonography, which is not very sensitive for detecting fatty
proliferation. CT is considered to be best to differentiate renal replacement lipomatosis from other fat rich
lesions, such as renal angiomyolipoma, retroperitoneal lipoma and liposarcoma.