Renal sinus lipomatosis in transplant kidney

Abstract

Renal sinus lipomatosis is a rare entity where there is abnormal proliferation of sinus fat. Fat proliferation can also occur in perinephric and periureteric regions. It is a benign condition which does not give rise to symptoms or any renal impairment. However, severe form of this condition, i.e. renal replacement lipomatosis, leads to atrophy of renal parenchyma, thereby leading to impairment of renal functions. Here, we report a case of renal sinus lipomatosis in a transplanted kidney, which is even rarer and has been reported in less than 10 previously reported cases in the English literature.