Hemangiomas happen when additional blood vessels develop. External hemangiomas are visible on the skin as a red mark. Also known as vascular birthmarks or infantile hemangiomas, they usually cause no problems aside from their appearance and often go away without treatment. External hemangiomas appear as a red mark near the surface of the skin. Some people call them a "strawberry mark" because of their bright red appearance. Hemangiomas can also occur inside the body, but this article looks at those that appear on the skin.
Cherry Hemangioma in Adults: Condition, Treatments, and Pictures - Overview | skinsight
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. They often develop on the face and neck, and can vary greatly in color, shape, and size. Because hemangiomas very rarely become cancerous, most do not require any medical treatment. However, some hemangiomas can be disfiguring, and many people seek a doctor's care for cosmetic reasons.
Thirty-four human "cherry" dermal hemangiomas were studied by electron microscopy, immunohistochemistry, and cell culture to assess the neoplastic nature of these lesions. Electron microscopy of nine hemangiomas revealed a pronounced thickening of the basement membrane 0. This increase was caused mainly by multiple layers of basal lamina, which were irregular in outline and frequently associated with pericytes. Basement membrane changes were present both in the periphery of the hemangiomas, as well as in the center of the lesions.
A cherry hemangioma is a small non-cancerous, red-purple bump on the skin that is typically seen in older adults. It is formed from an overgrowth of small veins. Cherry hemangiomas are found in individuals of all races and ethnic backgrounds. They occur more frequently with increasing age. Cherry hemangiomas may be found on any body location.