舌癌の研究

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Clinical and histological study was carried out on 65 cases of lingual cancer, which underwentglossectomy with neck dissection during the period from 1952 to 1963 in the Dept. of Oto-Rhino-Laryn-gology, Nagasaki University Hospital.The clinical and statistical aspect of this study is reported here as the first part.1. According to the statistics of mortality in Japan in the period from 1950 to 1958 published by the Bureau of Statistica Ministry of Welfare, the incidence of lingual cancer in Japan is 0.5% of all cancer.However the statistical investigation of the tumor incidence in all tumors in Nagasaki City fsom 1957 to 1959, revealed the incidence of 1_??_1.5%.2. The majority of the cases was in the age group of 40 to 60 years.3. Male showed 73.9% while female was 26.1%.4. Among the etiological factors of tongue cancer, the poor dental condition was found in the highest incidence of 86.1%.5. The tumors were located in the body of the tongue in 91%, particulary in its edge, whereas only 4 cases were found in the root of the tongue.6. The clinical appearance of tongue cancer are so varied that the authors have classified it into the following six forms.1) Leukoplakia form2) Erosion form3) Ulcer form4) Tumor form5) Mixed form6) Submucous deep form7. The histological examination revealed squa-mous cell carcinoma in most cases, (64 out of 65-cases).8. The clinical stage of lingual cancers were divided from I to IV by the authors, and while-44% on the I st stage and the 40% III rd stage-was found very few cases were seen in II and IV stages.The histopathological findings will be reported in the forecoming publication of the II nd part of this study.
社団法人日本耳鼻咽喉科学会の論文

舌癌の研究

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