原发性大肠非上皮组织肿瘤较罕见,我院自1969～1988年期间共发现23例,肿瘤均经内镜下活检或手术切除病理证实。一般资料本组23例中,男性14例,女性9例。年龄7～64岁,平均53岁,以45～60岁多见。病期:11例良性肿瘤从症状出现到就诊为20天至4年,平均5个月;12例恶性肿瘤为1～6个月,平均25个月。临床表现:本组腹痛15例(65.2%),多为隐痛 Primary non-epithelial tumors of the large intestine are rare. 23 cases were found in our hospital from 1969 to 1988. All tumors were confirmed by endoscopic biopsy or surgical resection. General Information In this group of 23 cases, there were 14 males and 9 females. Age 7 to 64 years old, an average of 53 years old, more common in 45 to 60 years old. Disease period: 11 cases of benign tumors from the onset of symptoms to treatment for 20 days to 4 years, an average of 5 months; 12 cases of malignant tumors for 1 to 6 months, an average of 25 months. Clinical manifestations: abdominal pain in this group of 15 cases (65.2%), mostly hidden pain