👉 A sarcoadenoma is a type of tumor that develops in the lining of the blood vessels, specifically the capillaries. These tumors are characterized by the presence of blood vessels and can be either benign or malignant. The exact cause for these tumors is not fully understood but it has been suggested to be related to a genetic mutation or exposure to certain substances. Sarcoadenomas can occur in any part of the body, including the brain, heart, lungs, and kidneys, although they are