Retiform hemangioendothelioma is a rare type of vascular tumor that affects the skin and subcutaneous tissue. It is characterized by a reticular pattern of vascular channels and is usually found on the lower extremities. It is usually benign, but can become malignant in some cases. Treatment typically involves surgical excision, but may also include radiation therapy or chemotherapy.

The most common symptom of retiform hemangioendothelioma is a raised, reddish-purple patch of skin. Other symptoms may include:

-Pain or tenderness in the affected area

-Itching or Burning sensation

-A lump or nodule under the skin

-Ulceration or bleeding

-Enlarged lymph nodes

-Fever

-Fatigue

-Weight loss

-Night sweats

Retiform hemangioendothelioma is a rare vascular tumor that is thought to be caused by a genetic mutation. It is believed that the mutation affects the cells that line the blood vessels, causing them to grow abnormally. Other possible causes include exposure to radiation, certain medications, and environmental toxins.

The main treatment for Retiform hemangioendothelioma is surgical excision. Depending on the size and location of the tumor, this may be done with either a wide local excision or a more extensive procedure such as a Mohs micrographic surgery. In some cases, radiation therapy may be used to reduce the size of the tumor prior to surgery. In cases where the tumor is not amenable to surgical excision, chemotherapy or immunotherapy may be used.

1. Exposure to radiation
2. History of trauma or surgery
3. Genetic predisposition
4. Exposure to certain chemicals
5. Advanced age
6. Male gender

At this time, there is no known cure for retiform hemangioendothelioma. Treatment typically involves surgical removal of the tumor, followed by radiation therapy and/or chemotherapy. In some cases, medications such as interferon or bevacizumab may be used to help slow the growth of the tumor.