Glomus Tumor as a Rare Cause of Dizziness.

Glomus tumors were described by Rosenwasser in 1945 (1). Glomus body tumors, often abbreviated as glomus tumors, are also known as paragangliomas or chemodectomas. They are a family of benign hypervascular neoplasms arising from the chief cells of the paraganglionic tissues. Furthermore, glomus tumors have vascular structure, comprising cell bundles stained with non chromaffin among thin-walled vascular channels (2,3). These tumors are located on the head, neck, jugular foramen, middle ear cavity, and carotid bifurcation bodies; the vagus nerves are common areas where they are often encountered. Glomus tumors constitute 0.6% of head and neck cancers and 0.03% of all cancers (4). The elapsed time between the onset of symptoms of glomus tumors and their diagnosis may differ from a few months to as long as 25 years. The average diagnosis time can be approximately 3-4 years after the emergence of symptoms (5,6).