Non specific granuloma of the larynx - Clinical analysis and malignant transformation.

Among non specific granulomas of the larynx, those, whose main cause seems to be vocal abuse, are usually called "Contact Granuloma". Our report deals with a) 14 cases we experienced and their clinical analysis, b) statistics of hitherto reported cases, c) one rare case, in which we find squamous cell carcinoma subsequently to contact granuloma. Among 14 cases, 11 cases are male, and 3 female. Male predominantly suffer this desease. Patient age ranges from 32 to 62, and there are no cases in younger generation. These inclination is almost the same as were reported before. As for the clinical symptoms, it is characteristic that the degree of hoarseness is remarkably low compared with the size of the tumor. We guess that the reason for this is the location of the tumor. The tumor is not just at the level of the glottis, but a little upper or lower the glottis. Therefore, it is not until the mass grows relatively large, that it comes to the glottis and interferes the vibration of the vocal cord. Another characteristic symptom is that many patients complain of sudden interruption of their phonation. We believe that this symptom can also be accounted for by their location.