Benign, non-cancerous kidney tumors containing smooth muscle. Often treated by nephrectomy.

An angiomyolipoma is a benign tumor that can occur in multiple organs, including the kidney, adrenal gland, liver, ovary, and pancreas. In TSC they are most commonly associated with the kidney. The name of these tumors refers to their composition: an abnormal collection of blood vessels (angio), smooth muscle (myo), and fat (lipoma).

A benign kidney tumor.