Glomus tumor closely related to a branch of the left sural nerve: a case of a rare lesion occurring at unusual location.

Glomus tumors are rare benign neoplasms arising from the glomus bodies of the skin; they account for 1.6 % of all soft tissue tumors. Since the great majority of these lesions are found on fingers and toes (especially under the nail, on the fingertip, or in the foot), a correct clinical diagnosis may prove difficult if one or more glomus tumors occur on an extra digital location. We report a case of a glomus tumor with prominent vascular component found in the left leg closely related to a branch of the sural nerve and originally believed to be a schwannoma.