Long-term follow-up of tracheal pleomorphic adenoma: A case report

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Pleomorphic adenomas occur primarily in the salivary glands, while the primary of the trachea is relatively rare. Depending on their location and size, they may elicit symptoms reminiscent of asthma and asphyxia. We performed a rigid bronchoscopic resection with a radiofrequency snare of a primary pleomorphic adenoma of the trachea with severe airway narrowing. In this case, the positive resection margins raised concerns about malignant transformation and local recurrence, but no recurrence has been observed seven years postoperatively. The low expression of Ki-67 on immunohistological examination may be one of the reasons for the absence of recurrence.

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