Angiomyolipoma

  • Etiology: hamartoma containing fat
  • Imaging: fat containing renal lesion, often multiple
  • Clinical: seen in tuberous sclerosis

Cases of Angiomyolipoma

Axial CT without contrast of the abdomen shows the right kidney to be normal in size and to contain multiple small low density lesions that when measured demonstrate negative Hounsfield units. The left kidney, which is massively enlarged, also contains multiple small low density lesions as well as one extremely large low density lesion in its anterior aspect.