Angioma
Encyclopedia
Angiomas are benign tumors derived from cells of the vascular
or lymphatic vessel walls (epithelium
) or derived from cells of the tissues surrounding these vessels.
Angiomas are a frequent occurrence as patients age, but they might be an indicator of systemic problems such as liver disease. They are not commonly associated with malignancy.
. Angiomas may appear anywhere on the body, and may be considered bothersome depending on their location. However, they may be present as symptoms of another more serious disorder, such as cirrhosis
. When they are removed, it is generally for cosmetic reasons.
Blood vessel
The blood vessels are the part of the circulatory system that transports blood throughout the body. There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and...
or lymphatic vessel walls (epithelium
Epithelium
Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of structures throughout the body, and also form many glands. Functions of epithelial cells include secretion, selective...
) or derived from cells of the tissues surrounding these vessels.
Angiomas are a frequent occurrence as patients age, but they might be an indicator of systemic problems such as liver disease. They are not commonly associated with malignancy.
Presentation
They usually appear at or near the surface of the skinSkin
-Dermis:The dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain. The dermis is tightly connected to the epidermis by a basement membrane. It also harbors many Mechanoreceptors that provide the sense of touch and heat...
. Angiomas may appear anywhere on the body, and may be considered bothersome depending on their location. However, they may be present as symptoms of another more serious disorder, such as cirrhosis
Cirrhosis
Cirrhosis is a consequence of chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue and regenerative nodules , leading to loss of liver function...
. When they are removed, it is generally for cosmetic reasons.
Types
- Hemangiomas
- Capillary: Cherry angiomaCherry angiomaCherry angiomas, also known as Campbell De Morgan spots or Senile angiomas, are cherry red papules on the skin containing an abnormal proliferation of blood vessels. They are the most common kind of angioma...
, Infantile haemangiomaInfantile haemangiomaInfantile haemangioma is a benign condition that affects superficial blood vessels. It is sometimes called a Strawberry Naevus.-Presentation:... - CavernousCavernous angiomaCavernous angioma, also known as cerebral cavernous malformation , cavernous haemangioma, and cavernoma, is a vascular disorder that alternately has been classified as neoplastic or hamartomatous. It is characterized by grossly dilated blood vessels with a single layer of endothelium and an...
- Pyogenic granulomaPyogenic granulomaPyogenic granuloma is a primarily oral disease which appears as an overgrowth of tissue due to irritation, physical trauma or hormonal factors...
- Lymphangiomas
- Capillary (simple)
- Cavernous (cystic)
- Glomus tumorGlomus tumorA glomus tumor is a rare benign neoplasm arising from the glomus body...
- Vascular ectasias
- Nevus flammeus
- Telangiectasia - SpiderSpider angiomaA spider angioma is a type of telangiectasis found slightly beneath the skin surface, often containing a central red spot and reddish extensions which radiate outwards like a spider's web...
, Hereditary hemorrhagicHereditary hemorrhagic telangiectasiaHereditary hemorrhagic telangiectasia , also known as Osler-Weber-Rendu disease and Osler-Weber-Rendu syndrome, is a genetic disorder that leads to abnormal blood vessel formation in the skin, mucous membranes, and often in organs such as the lungs, liver and brain.It may lead to nosebleeds, acute...
- Reactive vascular proliferations
- Bacillary angiomatosisBacillary angiomatosisBacillary angiomatosis is a form of angiomatosis associated with bacteria of the Bartonella genus.-Causes:It is caused by either Bartonella henselae or Bartonella quintana....
See also
- HemangiomaHemangiomaA hemangioma of infancy is a benign self-involuting tumor of endothelial cells, the cells that line blood vessels. It usually appears during the first weeks of life and sometimes resolves by age 10. In more severe case hemangioma may have permanency, if not treated by a physician...
- AngiomatosisAngiomatosisAngiomatosis is a non-neoplastic condition presenting with little knots of capillaries in various organs. It consists of many angiomas. It is also known as Von Hippel-Lindau Disease and is a rare genetic multi system disorder characterized by the abnormal growth of tumours in the body...
- Angiomatosis retinae
- Bacillary angiomatosisBacillary angiomatosisBacillary angiomatosis is a form of angiomatosis associated with bacteria of the Bartonella genus.-Causes:It is caused by either Bartonella henselae or Bartonella quintana....
- Cavernous angiomaCavernous angiomaCavernous angioma, also known as cerebral cavernous malformation , cavernous haemangioma, and cavernoma, is a vascular disorder that alternately has been classified as neoplastic or hamartomatous. It is characterized by grossly dilated blood vessels with a single layer of endothelium and an...
- List of cutaneous conditions
- Vascular anomalies