Extra digital glomus tumor causing scapulothoracic impingement: A case report.

Glomus tumor is a painful benign neoplasm which arises from the glomus body. The glomus body is neuromyoarterial receptor responsible for regulating the peripheral skin blood flow and local temperature. The classical clinical symptoms of the glomus tumor are acute local pain, pin point tenderness and hypersensitivity to cold. The commonest location of the glomus tumor is the subungual region of the distal phalanx of the fingers and toes. We hereby describe a very rare case of extradigital glomus tumor in the interspace between the scapula and the posterior chest wall causing paroxysmal severe pain on the movement of the right shoulder. Being deep in location, the tumor was not clinically palpable or identifiable. The lesion was eventually located on MRI. Surgical resection of the tumor led to complete resolution of patient's symptoms.