1. A malignant tumor arising from the endothelial cells that line blood vessels or lymphatic vessels.
Usage: medical; pathology; rare disease

Examples

• The patient was diagnosed with endothelioma after imaging revealed an abnormal growth in the blood vessel lining.
• Endothelioma is a rare form of cancer that develops from cells in the vascular system.
• Treatment options for endothelioma may include surgery, chemotherapy, and radiation therapy.
• The pathologist identified endothelioma cells under the microscope during the tissue analysis.
• Early detection of endothelioma is challenging because symptoms often appear late in the disease progression.