Renal angiomyolipoma

Case contributed by Mohammadtaghi Niknejad


Left flank pain

Patient Data

Age: 65 years
Gender: Female

A 105 × 70 × 75 mm exophytic well-defined fat containing mass is noted at the posterior aspect of left kidney. Several vascular structures are also observed within. 
Degenerative changes as osteophytosis are seen at the lumbar spine.

Case Discussion

Features are typical for left renal angiomyolipoma, which is a type of benign renal neoplasm encountered both sporadically and as part of a phakomatosis, most commonly tuberous sclerosis.
On CT scan images most lesions involve the cortex and demonstrate macroscopic fat (less than -20 HU).

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