logo logo
Search: Organ site Search: Tumor / Syndrome
or
WHO Classification of Tumours
Kaposi sarcoma
Gallbladder and extrahepatic biliary tract


Definition

A malignant neoplasm characterized by a vascular proliferation which usually contains blunt endothelial cells. Erythrocyte extravasation and hemosiderin deposition are frequently present. It preferentially develops in people with compromised immune systems including those with the acquired immune deficiency syndrome (AIDS).