Abstract
Adenoid cystic carcinomas occur in the major salivary glands, and laryngeal adenoid cystic carcinomas are rare. We report two cases of laryngeal adenoid cystic carcinomas that occurred in the subglottis and supraglottis. One case is the patient who was admitted with a chief complaint of dyspnea, and showed a significant subglottic stenosis. Pathological diagnosis was adenoid cystic carcinoma. So the patient underwent a total laryngectomy. In the operation, we noticed invasion of the outer membrane of the esophagus. Pathologically the tumor had infiltrated into the thyroid. So postoperative radiation therapy was given. The other case is the patient who was admitted with a chief complaint of hoarseness. A tumor was found in the supraglottis. Pathological diagnosis was adenoid cystic carcinoma, so the patient underwent a laryngectomy. Apparent infiltration into multiple organs was not found, so no additional therapy was given after surgery. The course is favorable in both cases without local recurrence, or distant metastasis.
