[Clinical and pathologic staging in 100 cases of laryngeal cancer].

A retrospective histopathologic study of 100 specimens of laryngeal cancer treated by laryngectomy were carried out to test the accuracy of the clinical staging. The findings indicated that the inaccuracy rate of the preoperative staging was 46%, supraglottic type 46.7%, glottic 21.1%, subglottic 50% and transglottic 70.6%. Forty five cases were understaged and one overstaged. The erroneous staging was resulted from the under-estimation of the depth of tumor invasion, such as the invasion of the laryngeal framework, preepiglottic space, anterior commissural area and paraglottic space, etc. In this paper the relationship between cell differentiation, growth pattern and "P" staging are analysed. We attempt to demonstrate that "barrier" of the larynx can limit the invasion of carcinoma to various degrees. This paper also presents the follow-up data of 63 patients to three years after operation.