Composite hemangioendothelioma is a rare type of vascular tumor that is composed of both hemangioma and endothelioma cells. It is usually found in the skin and soft tissues of the body, and can sometimes be found in the liver, spleen, and other organs. It is usually benign, but can sometimes be malignant. Treatment typically involves surgical removal of the tumor, and may also include chemotherapy or radiation therapy.

The symptoms of Composite hemangioendothelioma vary depending on the location of the tumor. Common symptoms include:

-Pain or tenderness in the affected area
-Swelling or a lump in the affected area
-Skin discoloration
-Fever
-Fatigue
-Weight loss
-Night sweats
-Loss of appetite
-Nausea and vomiting
-Abdominal pain
-Jaundice (yellowing of the skin and eyes)
-Enlarged lymph nodes

Composite hemangioendothelioma is a rare vascular tumor that is thought to arise from a combination of endothelial and mesenchymal cells. The exact cause of this tumor is unknown, but it is believed to be related to genetic mutations and environmental factors. Some potential risk factors for developing composite hemangioendothelioma include exposure to radiation, certain medications, and certain genetic conditions.

The treatment for composite hemangioendothelioma depends on the size and location of the tumor. Treatment options may include:

1. Surgery: Surgery is the most common treatment for composite hemangioendothelioma. The goal of surgery is to remove the entire tumor.

2. Radiation therapy: Radiation therapy may be used to shrink the tumor before or after surgery.

3. Chemotherapy: Chemotherapy may be used to shrink the tumor before or after surgery.

4. Targeted therapy: Targeted therapy is a newer type of treatment that uses drugs to target specific molecules in the tumor cells. This type of therapy may be used in combination with other treatments.

5. Clinical trials: Clinical trials are research studies that test new treatments. Participating in a clinical trial may give you access to treatments

1. Exposure to radiation
2. Exposure to certain chemicals
3. Genetic predisposition
4. Family history of the disease
5. Age (more common in adults)
6. Gender (more common in males)
7. Certain medical conditions, such as diabetes, obesity, and high blood pressure

At this time, there is no known cure for composite hemangioendothelioma. Treatment options may include surgery, radiation therapy, chemotherapy, and/or targeted therapy. Your doctor will be able to discuss the best treatment options for your specific case.