Although the incidence of bronchiogenic carcinoma has increased tremendously in the past decade, a similar increase has not been noted in the incidence of the several types of tumor of the trachea. Tumor of the trachea occurs infrequently, and its rarity has been stressed in all comprehensive reviews of the subject. Culp,1 in a review of the literature up to 1938, found but 147 cases of carcinoma of the trachea and in only 82 of these cases were there accurate histologic data. Unfortunately, the diagnosis of carcinoma of the trachea is generally established late in the course of the disease, and as a result successful treatment is usually impossible. Therefore, a study of the symptoms, the physical signs and the diagnostic procedures that may facilitate the earlier diagnosis of tumor of the trachea seems of value. The present study is based on a review of 27 cases of neoplasm of