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对十二指肠空肠曲（下简称曲氏角）形态与十二指肠淤积症（简称淤积症）的关系进行了研究，观察了３２０例曲氏角形态，且把它归纳为３种类型：①成角型曲氏角形态呈尖角状，钡剂通过受不同程度的阻碍，共５２例，占１６．３％；②钝圆型曲氏角形态呈钝圆状，没有成角现象。共１９６例，占６１．３％；③水平型曲氏角形态呈水平状，共７２例，占２２．５％。后两者钡剂通过顺利。３种类型中与淤积症有关的是成角型，尤其是其角度小于２０°者。
The relationship between the morphology of duodenal jejunum (referred to as Qu Wei angle) and duodenal deposition disease (referred to as depositional disease) was studied. The morphology of 320 cases was observed and classified into three types ① angulation type Kok angle was sharp-pointed, barium by varying degrees of obstruction, a total of 52 cases, accounting for 16.3%; ② blunt round-shaped Kok angle was blunt round, there is no angular phenomenon . A total of 196 cases, accounting for 61.3%; ③ horizontal type Kok angle was horizontal, a total of 72 cases, accounting for 22.5%. After the two barium passed smoothly. Of the three types, angiosis is associated with the disease, especially at angles less than 20 °.