Is epithelioid hemangioendothelioma malignant?

Is epithelioid hemangioendothelioma malignant?

EHE is a malignant (cancerous) tumor. Unlike benign tumors, EHE can grow out of control, spread to other parts of your body and damage healthy tissue.

However, EHE is complex because some tumors behave like more aggressive cancers and spread quickly. Other tumors grow slowly. Some tumors even shrink without treatment. Because these tumors behave so differently, it can be challenging to predict how serious a tumor is or how it will respond to treatment.