Source:http://linkedlifedata.com/resource/umls/id/C0017653
MSH: A blue-red, extremely painful vascular neoplasm involving a glomeriform arteriovenous anastomosis (glomus body), which may be found anywhere in the skin, most often in the distal portion of the fingers and toes, especially beneath the nail. It is composed of specialized pericytes (sometimes termed glomus cells), usually in single encapsulated nodular masses which may be several millimeters in diameter (From Stedman, 27th ed). CHEMODECTOMA, a tumor of NEURAL CREST origin, is also sometimes called a glomus tumor.,NCI: A rare benign or malignant mesenchymal neoplasm arising from cells that resemble the modified smooth muscle cells of the glomus body. The majority of glomus tumors occur in the distal extremities.