Figure 5
Angiomyolipoma bleeding (a) US image shows a large heterogeneous lesion with mixed areas hyper and hypo-echoic (b) unenhanced axial CT image confirm a large hyperdense lesion at upper left renal pole. (c-d) Arterial and venous phase CT axial images show contrast material extravasation (arrowheads) from the upper left renal pole into a large hematoma. The renal parenchyma close to the hematoma presents multiple lesions having attenuation characteristic of angiomyolipomas (hollow arrow) (patient with Tubrous Sclerosis).