日本人とアメリカ人の大腸の長さは違うのか? : 大腸3D-CT(仮想内視鏡) による1,300名の検討 COLORECTAL LENGTH IN JAPANESE AND AMERICAN ASYMPTOMATIC ADULTS BASED ON CT COLONOGRAPHY

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【目的】大腸3D-CTを用いて日本人とアメリカ人の大腸の長さを比較した.<BR>【対象】50歳以上の日本人とアメリカ人650名ずつ,合計1,300名を対象とした.<BR>【結果】全対象における全大腸の長さの平均は日本人とアメリカ人でそれぞれ154.7cm,158.2cm,(<I>p</I>値:0.003,効果量:0.17),S状結腸と直腸を合計した長さの平均はそれぞれ63.3cm,62.5cm,(<I>p</I>値:0.23,効果量:0.07)であった.世代別では,50歳代で全大腸の長さの平均は日本人とアメリカ人でそれぞれ153.2cm,155.6cm,60歳代で155.2cm,159.3cm,70歳代で161.8cm,165.2cmで,日米ともに世代が上がるにつれて有意に長くなった.<BR>【結論】日本人とアメリカ人の大腸の長さの差に実質的効果はみられずほぼ同等である.一方,日米ともに世代が上がるにつれて全大腸の長さは長くなる.

Objective : CT colonography (CTC) is an accurate examination for evaluating the colorectal length. The purpose of this study was to compare possible differences in colorectal length between Japanese and American asymptomatic adults with CTC. Methods : CTC studies in 1300 adults (650 Japanese and 650 American adults over 50 years of age) with technically adequate distension were analyzed using a colon imaging workstation. The total colorectal length and rectosigmoid length measurements were recorded for all patients. Results : Although the total colorectal length was significantly shorter (<I>p</I>-value = 0.003) in the Japanese group (average = 154.7 cm) compared to the American group (average = 158.2 cm), the effect size (0.17) was very small. There was no significant difference (<I>p</I>-value = 0.23, effect size = 0.07) in rectosigmoid length comparing the Japanese group (average = 62.5 cm) to the American group (average = 63.3 cm). The total colorectal lengths of the Japanese and American groups in the 50-59 years age group were 153.2 cm and 155.6 cm respectively, in the 60-69 years age group they were 155.2 cm and 159.3 cm respectively, and 161.8 cm and 165.2 cm, respectively, in the over-70 group. The total colorectal length significantly increased with age. Conclusion : In conclusion, we found that there was no overall difference in the total colorectal length or rectosigmoid length between Japanese and American adults. The total colorectal length increased with age in both the Japanese and American groups.

収録刊行物

  • 日本消化器内視鏡学会雑誌 = Gastroenterological endoscopy

    日本消化器内視鏡学会雑誌 = Gastroenterological endoscopy 55(3), 435-444, 2013-03-20

    Japan Gastroenterological Endoscopy Society

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各種コード

  • NII論文ID(NAID)
    10031163769
  • NII書誌ID(NCID)
    AN00192102
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03871207
  • データ提供元
    CJP書誌  J-STAGE 
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