Abstract
Glomus tumors are distinctly uncommon in the lung and the trachea. Outside the lung and trachea, glomus tumors are seen in the extremities, particularly around the nail beds and internally in bone, stomach, colon, and small intestine and other sites. They are said to be derived from the glomus apparatus and thought to regulate blood flow, particularly in the extremities. Their true frequency is not known since some cases may have been reported as angiomatous tumors. Glomus tumors are regarded as vascular tumors and those that have a more prominent vascular network are known as glomangiomas. An oncocytic variant has been described. Glomangiosarcomas are also seen but are exceptionally rare. The age of patients with tracheal glomus tumors range from 34 to 74 years and show a distinct male predominance. Presenting symptoms are dyspnea, cough, and hemoptysis. Most are located in the posterior (membranous) wall of the trachea and protrude into its lumen causing the above-cited symptoms and signs.
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