Mammalian glomus tumor: Contribution of nerve ultrasound

Glomus tumor is an enigmatic tumor derived from proliferation of the normal capsular–neural glomus apparatus of the skin. This type of tumor is usually painful and may be solitary or multiple. Tenderness and cold hypersensitivity are other common symptoms with marked impairment of quality of life. It usually occurs in men from the fourth to the seventh decade. Localization of this tumor is highly variable, with major prevalence at subungual sites. The low frequency of glomus tumor and the heterogeneous presentation often delay diagnosis. An atypical anatomical site and the usually small size of the tumor may further complicate diagnosis. Nerve ultrasound (US) is considered an efficient tool for diagnosis of nerve diseases.