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目的探讨对有症状就诊人群进行大肠镜检查的临床意义。方法１９９５年～１９９６年对１２４６例因有下消化道症状就诊于消化科的患者进行大肠镜检查。结果肠粘膜炎性改变４３７例，溃疡性结肠炎５５例，息肉１８７例（腺瘤１２１例，增生性息肉６６例），肠癌１１１例，未发现病变４１１例。在１８７例中发现并摘除息肉２９１枚，其中１３例１３枚息肉有局部恶变者电凝摘除后随访１年无异常发现。１１１例肠癌中ＤｕｃｋＡ６０例。腺癌、息肉的检出率与年龄呈正相关（Ｐ＜０．０５），但≤２９岁组腺癌、息肉也分别检出１．８％和１６．４％。结论有症状就诊人群大肠镜检查是一可行、安全、费用不高和省时的方法，能明显减少大肠癌的发病率和死亡率。
Objective To explore the clinical significance of colonoscopy in patients with symptomatic treatment. Methods From 1995 to 1996, 1246 colonoscopy was performed in patients with digestive diseases who had lower gastrointestinal symptoms. Results 437 cases of intestinal mucosal inflammatory changes, 55 cases of ulcerative colitis, 187 cases of polyps (adenoma 121 cases, 66 cases of proliferative polyps), 111 cases of colorectal cancer, no lesions were found in 411 cases. Of the 187 cases, 291 polyps were found and removed, of which 13 cases of polypoid lesions of 13 patients with local malignant transformation were found after one year follow-up. Duck A60 cases of 111 cases of colorectal cancer. The positive rates of adenocarcinoma and polyp were positively correlated with age (P <0.05). However, adenocarcinoma and polyps of ≤29 years old were also detected in 1.8% and 16.4% respectively. Conclusions Colonoscopy in symptomatic clinicians is a feasible, safe, inexpensive and time-saving method that can significantly reduce the incidence and mortality of colorectal cancer.