An Unusual Cause of Dyspnea.

Sialadenoma papilliferum is a tumor of salivary gland origin. It is believed that sialadenoma papilliferum is a benign lesion usually known to occur in the hard palate, retromolar fat pads, lips, and parotid glands. Its origin in the bronchial tree is an extremely rare occurrence. We report only the fourth known case of bronchial sialadenoma papilliferum and the first to originate in the trachea. The patient underwent successful resection of the lesion, with complete relief of his dyspnea.