原发性結腸恶性肿瘤的早期症状此較不明显,常不为患者所重视,以致求治較迟,影响预后。在上海第一医学院过去10年中所見之98例該項患者中,以腹部隐痛或不适,以及大便习慣改变为最常見之早期症状,故遇中年以上患者主訴上述症状时,应給予进一步檢查。后期症状中,腹痛占73.5％,体重 The early symptoms of primary malignant tumors of the colon are less obvious, and are often not valued by patients, so that the treatment is delayed and affects the prognosis. Among the 98 cases seen in Shanghai First Medical College in the past 10 years, abdomen pain or discomfort and changes in bowel habits were the most common early symptoms. Therefore, patients with middle age or above complained about the above symptoms and should be given Further examination. In late symptoms, abdominal pain accounted for 73.5% and weight