左半结肠和右半结肠的区别是什么 王山川 山西省肿瘤医院 скачать в хорошем качестве

左半结肠和右半结肠的区别是什么 王山川 山西省肿瘤医院

左半结肠和右半结肠的区别是什么 王山川 山西省肿瘤医院 左半结肠和右半结肠主要是解刨部位不同而导致其临床表现不同。右侧结肠癌因为右半结肠腔径比较大，以吸收功能为主，肠腔内粪便稀薄，所以右侧结肠癌时可有腹泻、便秘、腹泻，与便秘交替、腹胀、腹痛、腹部压痛，腹部肿块以及进行性贫血。在晚期可以有肠穿孔，局限性脓肿等并发症。而左侧结肠癌由于左侧结肠腔不如右侧结肠宽大，乙状结肠肠腔狭小，且与直肠形成锐角，粪便在左侧结肠已成形，因此左侧结肠癌时常容易发生慢性肠梗阻。患者大多有顽固性便秘，也可以排便次数增多。由于肠梗阻大多在乙状结肠下段，所以呕吐较轻。或者是腹胀、腹痛、肠鸣亢进以及肠型比较明显，癌肿破溃时可使粪便外面染有鲜血及粘液，甚至排出脓液。 What is the difference between the left and right half of the colon The clinical manifestations of the left and right half of the colon are different due to the different parts of the planning. The right colon cancer has a large lumen, The main function is absorption, The feces in the intestine are thin, So right colon cancer can have diarrhea, constipation, diarrhea, Alternating with constipation, abdominal distention, abdominal pain, abdominal tenderness, Abdominal mass and progressive anemia. In the later stage, there may be intestinal perforation, Local abscess and other complications. However, the left colon cancer is not as wide as the right colon due to the left colon cavity, The lumen of sigmoid colon is narrow, It forms acute angle with rectum, Feces has formed in the left colon, Therefore, the left colon cancer is often prone to chronic intestinal obstruction. Most patients have stubborn constipation, It can also increase the number of defecations. Because ileus is mostly in the lower sigmoid, So the vomiting is lighter. Or abdominal distention, abdominal pain, hyperactivity of bowel sounds and bowel type are obvious, When the cancer breaks, it can cause blood and mucus outside the stool, Even discharge pus.