Definition:A benign perivascular tumor that is a morphologic variant of the glomus tumor characterized by the presence of dilated veins, surrounded by small clusters of glomus cells. Glomangiomas are most often present in patients with multiple lesions.
Definition:A hemangiopericytic tumor that is a mesenchymal neoplasm composed of cells that closely resemble the modified smooth muscle cells of the normal glomus body.
Definition:A hemangioma that is characterized by a configuration of blood vessels that shunts arterial blood directly into veins by bypassing the capillary system.