Sonographic appearance of a cholesterol granuloma within a renal epithelioid angiomyolipoma.

We present the sonographic characteristics of a rare case of cholesterol granuloma within a renal epithelioid angiomyolipoma (AML) in a 57-year-old woman. Sonography showed acoustic shadowing distal to the central region of the AML behind a hyperechoic cholesterol, which was hypoattenuating on CT with no contrast enhancement. Microscopic examination confirmed that this central area was a cholesterol granuloma.

Multiple gastrointestinal stromal tumors in a patient with type I neurofibromatosis presenting with tumor rupture and peritonitis.

A young woman with type 1 neurofibromatosis (NF-1) complained of abdominal pain for 3 days. Computed tomography disclosed two jejunal tumors with rupture and peritonitis. Surgery revealed two tumors in the jejunum, one of which was ruptured.