CLINICAL OBSERVATIONS ON THE SULCUS VOCALIS

Sulcus Vocalis

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During the 6 months period from Oct. 1965 to March 1966 in the department of Oto-Rhino-Laryngology, School of Medicine, Gunma University, we encountered 58 cases diagnosed as sulcus Vocalis, which is a groove in the vocal cord running parallel with its free edge. We examined and statistically discussed these cases mainly from the view of its clinical aspects and observed the following results. Incidence of the sulcus Vocalis in our clinic showed approximately 13% among the patients complaining of laryngeal problems. The cases with the sulcus Vocalis were found in the patients suffering from chronic laryngitis (25 cases), vocal cord polyp (23), recurrens paresis (4), laryngeal neurosis (2) and laryngeal tumor (2). The results concerning about sex incidence, age at onset and other clinical signs and symptome were discribed. The local findings about sulcus Vocalis showed that its groove is variable in length and depth, and that its localization is in various ways, namely it was observed as a groove on only one side of the vocal cord in the some patients (23 cases) and on the both sides in the others (58 cases).
Moreover, we discribed about the pathohistological findings of the sulcus Vocalis and discussee about its etiology from viewpoints of our observations and the literatures.