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对结肠“无名沟”的研究是在X线检查时发现在钡剂排空后边缘具有微小牵拉现象而开始的。1962年Dassel作了进一步的观察和解释。这种牵拉现象约深0.5～2mm,直径为1mm;两个牵拉现象之间相距为3～5mm,分布于部分或整个结肠。如钡剂充盈肠腺隐窝内,则易与早期溃疡性结肠炎的病变混淆。1965年Williams称这种牵拉现象为“无名沟”,是构成肠壁的基本单位,与溃疡性结肠炎或结肠憩室前期炎无关。
The study of the “anonymous ditch” of the colon began at the X-ray examination with a slight pull-off of the edge of the barium after emptying. Dassel made further observations and explanations in 1962. This phenomenon of pulling about 0.5 ~ 2mm deep, a diameter of 1mm; between the two traction phenomenon is 3 ~ 5mm, distributed in part or the entire colon. Such as barium filling gland crypt, it is easy to be confused with the early ulcerative colitis lesions. In 1965, Williams called the pulling phenomenon “anonymous groove”, the basic unit that forms the intestinal wall, not associated with ulcerative colitis or colonic diverticulitis.