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Cherry hemangioma
Cherry 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. They are called Campbell de Morgan spots after the nineteenth-century British surgeon Campbell De Morgan, who first noted and described them.
The frequency of cherry angiomas increases with age.
==Signs and symptoms==
Cherry angiomas are made up of clusters of capillaries at the surface of the skin, forming a small round dome ("papule") , which may be flat topped . They range in colour from bright red to purple. When they first develop, they may be only a tenth of a millimeter in diameter and almost flat, appearing as small red dots. However, they then usually grow to about one or two millimeters across, and sometimes to a centimeter or more in diameter . As they grow larger, they tend to expand in thickness, and may take on the raised and rounded shape of a dome. Multiple adjoining angiomas are said to form a ''polypoid angioma''. Because the blood vessels comprising an angioma are so close to the skin's surface, cherry angiomas may bleed profusely if they are injured.
One study found that the majority of capillaries in cherry hemangiomas are fenestrated because of staining for carbonic anhydrase activity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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