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What is choroidal hemangioma?
Choroidal hemangioma is an uncommon benign vascular tumor of the choroid that can be circumscribed or diffuse. Circumscribed choroidal hemangiomas are usually diagnosed between the second to fourth decade of life when they cause visual disturbances owing to the development of an exudative retinal detachment.
What is capillary hemangioma?
Capillary hemangioma is one of the most common benign orbital tumors of childhood affecting up to 5% of infants under the age of 1 year. It can be superficial, presenting as a red, raised lesion, it can be deep, presenting as a dark blue lesion that may extend into the orbit or may present both of the above components.
Where is a choroidal nevus located?
A choroidal nevus (plural: nevi) is typically a darkly pigmented lesion found in the back of the eye. It is similar to a freckle or mole found on the skin and arises from the pigment-containing cells in the choroid, the layer of the eye just under the white outer wall (sclera).
What causes hemangioma?
Hemangiomas of the skin develop when there’s an abnormal proliferation of blood vessels in one area of the body. Experts aren’t sure why blood vessels group together like this, but they believe it’s caused by certain proteins produced in the placenta during gestation (the time when you’re in the womb).
Should I worry about a choroidal nevus?
Treatment and prognosis Most choroidal nevi remain benign (non-cancerous) and have no symptoms. However, occasionally, a nevus can transform into uveal melanoma. The rate of choroidal nevi transforming into melanoma is estimated at approximately 1 in 9000 per year.
Should I be worried about a choroidal nevus?
Should I be worried if I have a choroidal nevus? Choroidal nevi are common and occur in about 5-10% of the population. Even though most nevi do not affect vision or cause any problems, they should still be watched regularly. Just like a skin mole can become cancerous, an eye nevus could do the same.
Can a choroidal nevus be removed?
There is no way to safely remove a choroidal nevus. If your condition turns into choroidal melanoma, your doctor will closely monitor your condition and may recommend radiation therapy. In extreme cases, enucleation (removal of the eye) may be recommended.
Can a choroidal nevus affect vision?
Choroidal nevus can produce central vision loss and peripheral visual field loss. Rarely, choroidal nevus can evolve into malignant melanoma.
What kind of tumor is a hemangioma?
A hemangioma is a benign (noncancerous) tumor made up of blood vessels. There are many types of hemangiomas, and they can occur throughout the body, including in skin, muscle, bone, and internal organs. Most hemangiomas occur on the surface of the skin or just beneath it.
What is tumor?
An abnormal mass of tissue that results when cells divide more than they should or do not die when they should. Tumors may be benign (not cancer), or malignant (cancer).
What is a cancer in slow motion called?
Carcinoid tumor is a rare type of tumor that usually grows slowly. Carcinoid tumors are cancerous, but have been called cancer in slow motion, because if you have a carcinoid tumor, you may have it for many years and never know it. In rare cases, usually after a carcinoid tumor has spread, it can cause symptoms called carcinoid syndrome.
What is a benign tumor?
Many tumors are benign (not cancerous). Tumors can form throughout the body. They can affect bone, skin, tissues, glands and organs. Neoplasm is another word for tumor.
What is a carcinoid tumor?
Carcinoid tumors are cancerous, but have been called cancer in slow motion, because if you have a carcinoid tumor, you may have it for many years and never know it. In rare cases, usually after a carcinoid tumor has spread, it can cause symptoms called carcinoid syndrome. Fewer than 10% of people with carcinoid tumors have or develop symptoms.