Appearances of the larynx after radiation therapy

Laryngeal tomography and lateral Xerox radiographs from 21 cases of carcinoma of the larynx previously treated by irradiation were analyzed. Although false negatives and false positives did occur, radiology made a useful contribution to the diagnosis or exclusion of recurrence in a number of cases. The most relevant positive findings were: 1. Ulceration, 2. Asymmetrical swelling, 3. Failure of tumor mass to shrink.