Presentation
Flank pain.
Patient Data
Age: 50 years
Gender: Female
From the case:
Renal angiomyolipoma
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Axial non-contrast

Malposition of left kidney is present with anteriorly rotated hilum. A 14×10mm well defined fat density mass is noted at posterolateral aspect of left kidney.
Case Discussion
Small left renal fat containing mass; most compatible with renal angiomyolipoma, which is a type of benign renal neoplasms encountered both sporadically and as part of a phakomatosis, most commonly tuberous sclerosis.