切除痔核組織内に見られる肛門腺と痔瘻瘻管内に見られる肛門腺の形態とその意義 Histological Features and Significance of Anal Glands Observed in Operated Hemorrhoidal Tissues and Fistulous Tracts

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痔核組織に認められる肛門腺(男性22人,女性20人)と痔瘻瘻管内に見られる肛門腺(男性30人,女性7人)の組織学的特徴と男女間の比較検討を行い,その意義について検討した.痔核組織内肛門腺は,導管直走型,下行性が多く,管壁は移行上皮に被覆され,男性は円柱上皮を併存する症例が多かった.管壁の厚さ,外径,内径の男女差はなく,Herrmann線からの距離肛門腺の長さにも違いはなかった.痔瘻瘻管内の肛門腺は,円柱上皮より成るものが男性で多く,女性では扁平上皮化生した肛門腺の割合が多かった.管壁の厚さ,外径は男女差はないものの,管腔内径は男性が有意に広かった.粘液産生能は女性に陰性例が多く,扁平上皮化生した部位では粘液産生はなかった.肛門腺の感染の要因には,管壁が円柱上皮で被覆され,管腔の内径が広くなることであり,感染が消退するには,扁平上皮化生し,管腔が閉鎖する事と考えられた.

Histological features and differences of the anal glands between males and females were examined in operated hemorrhoidal tissues (22 males and 20 females) and resected fistulous tracts (30 males and 7 females). A high proportion of anal glands in hemorrhoidal tissues was found to be unbranched and extending caudad in both sexes. In men, the ducts were frequently lined with transitional epithelia associated with columnar cells, but there were no differences in size, depth and position of the anal glands between the men and women. Mucous production ability of the ducts in females was found to be weaker than in males. The majority of the anal ducts in fistulous tracts were lined with columnar epithelia overlying transitional epithelium in men, and with squamous metaplastic epithelia in women. The size of the wall and outside diameter of the ducts in fistulous tracts, which were found to have no differences between males and females, were significantly greater than those in hemorrhoidal tissues. The size of inside diameter of the duct in fistulous tracts in males was significantly greater than in females. It is presumed that the spread of infection through the anal glands corresponds to the enlarged ducts lined with columnar epithelia and inflammation faded by closing of the duct lumen reconstructed with squamous metaplasia.

収録刊行物

  • 日本大腸肛門病学会雑誌  

    日本大腸肛門病学会雑誌 59(5), 251-258, 2006-05-01 

    The Japan Society of Coloproctology

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各種コード

  • NII論文ID(NAID)
    10018167374
  • NII書誌ID(NCID)
    AN00195100
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00471801
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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