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頭頸部癌患者3,000人に色素内視鏡を行い8.7%に食道癌が発見された.重複癌317例で同時性60.9%,異時性頭頸部癌先行28.1%,異時性食道癌先行10.1%であった.頭頸部癌の占居部位は下咽頭41.9%と最も多かった.喫煙率は77.6%,Brinkmann index1053.0,飲酒率は83.0%,Sake index104.1であった.肉眼型では0-IIc47.3%,0-IIb20.5%,長径では11~20mmが30.7%と最も多く,深達度ではm1,m2が49.1%を占めた.食道不染帯の数はまだら食道が29.3%と最も多く,食道多発癌は32.8%に認めた.治療方法ではm1,m2の58.7%にEMRが施行され,m3,sm1の54.8%,sm2,sm3の76.6%に手術が施行された.また全体の12.0%に放射線・化学療法が施行されていた.
Three thousand patients with head and neck cancer underwent endoscopic screening with iodine staining and esophageal cancer was detected in 8.7 % of these patients. The number of patients with double cancer was 317 cases, which consisted of 60.9 % synchronously, 28.1 % metachronously with detection of head and neck as the primary cancer, and 10.1 % with esophageal cancer as the primary one. The largest location of head and neck cancer was the hypopharynx. The rate of smoking was 77.6 % and the Brinkmann index was 1053.0. In addition, the rate of drinking was 83.0 % and the Sake index was 104.1. Regarding the type of macroscopic appearance, 0-IIc was found in 47.3 % and 0-IIb in 20.5 %. The largest diameter of tumor was 11~20 mm in 30.7 % and the depth of wall invasion of “m1 and m2” occupied 49.1 %. Regarding the number of unstained areas, the so-called “multiple small iodine unstained lesions” type was largest in 29.3 %, and multiple esophageal cancer was found in 32.8 %. For treatment, 58.7 % of patients with “m1 and m2” underwent EMR, but, 54.8 % with “m3 and sm1” and 76.6 % with “sm2 and sm3” underwent surgical operation. Finally, radiation and/or chemotherapy was performed in 12.0 % of all patients.
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