CANCER OF THE TRACHEA: REPORT OF FIVE CASES

Abstract
Recent reviews of the literature reveal that cancer of the trachea is rare. Some 60 cases of primary cancer of the trachea were reported up to 1924; in 1933 the number of cases has increased to 154.1 The first recorded observation of a tracheal new growth was that of Lieutaud in 1767.2 Semon stated that the frequency relation of laryngeal to tracheal tumors was 100: 1.2 As can be readily seen from the accompanying table, carcinoma is found much more frequently than is sarcoma. Primary carcinoma of the trachea usually arises in the lower third of the trachea and is of the squamous cell type. It is a highly malignant growth which develops insidiously. The initial symptom is usually an irritating cough, which may or may not be accompanied by blood-streaked sputum. This growth has a broad base, and as it increases in size dyspnea is produced, which

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