Glomus tumour of the skin or nail apparatus (Q96744)

A benign tumour of the myoarterial glomus, composed of vascular channels surrounded by proliferating glomus cells. The tumours have variable quantities of glomus cells, blood vessels and smooth muscle. According to the relative proportions of quantities of glomus cells, blood vessels and smooth muscle they may be classified as solid glomus tumour, glomangioma or glomangiomyoma. They present as painful pink nodules and are often located on the fingers or under the nail plate.