Epithelioid hemangioendothelioma
Epithelioid hemangioendothelioma (pronunciation: e-pi-the-lei-oid he-man-gee-o-en-do-the-lei-o-ma) is a rare form of vascular tumor that arises from the cells lining the blood vessels, known as endothelial cells. The term "epithelioid" refers to the appearance of the tumor cells, which resemble epithelial cells under a microscope.
Etymology
The term "Epithelioid hemangioendothelioma" is derived from the Greek words "epithelion" (meaning cover), "haima" (meaning blood), "angeion" (meaning vessel), "endothelium" (meaning inner layer), and "oma" (meaning tumor).
Related Terms
- Vascular tumor: A type of tumor that originates from the blood vessels or lymph vessels.
- Endothelial cells: Cells that line the interior surface of blood vessels and lymphatic vessels.
- Epithelial cells: Cells that line the outer surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs.
Symptoms
Epithelioid hemangioendothelioma can occur in any part of the body, but it most commonly affects the lungs, liver, and bones. Symptoms vary depending on the location of the tumor and may include pain, swelling, and difficulty breathing.
Diagnosis
Diagnosis of epithelioid hemangioendothelioma is often challenging due to its rarity and nonspecific symptoms. It typically involves imaging tests such as CT scan or MRI, and a biopsy of the tumor for microscopic examination.
Treatment
Treatment options for epithelioid hemangioendothelioma include surgery, radiation therapy, and chemotherapy. The choice of treatment depends on the size, location, and spread of the tumor.
Prognosis
The prognosis for individuals with epithelioid hemangioendothelioma varies widely and depends on several factors, including the size and location of the tumor, the person's overall health, and the response to treatment.
External links
- Medical encyclopedia article on Epithelioid hemangioendothelioma
- Wikipedia's article - Epithelioid hemangioendothelioma
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