Angiomyolipomas of the mediastinum and the lung.

Angiomyolipomas are benign neoplasms composed of various tissues, including components of fat, abnormal blood vessels, and smooth muscle cells. They most commonly occur in the kidney, but on rare occasions they occur in extrarenal sites. We present a case of angiomyolipomas in the mediastinum and lung, possibly associated with lymphangioleiomyomatosis and tuberous sclerosis complex.