原发性十二指肠恶性肿瘤发病率很低。我院1956—1983年共收住13例患者,均经内窥镜活检或手术后病理证实。现将临床资料作一分析,以供参考。临床资料分析一、年龄和性别:发病年龄为33岁—70岁,40岁—59岁占多数(8例)。男性9例,女性4例,男女之比为2.25∶1。二、病变部位和病理类型:本组13例中以腺癌多见,共11例,占84％。平滑肌肉瘤及淋巴肉瘤各1例,分别占8％。从病变的部位来分,球部1例(7.7％),降部9例(69.2％),横部3例(23.1％),以降部最多见。如以乳头为界,乳头上部4例(30.7％),乳头部6例 The incidence of primary duodenal malignancy is very low. A total of 13 patients were admitted to our hospital from 1956 to 1983, and were confirmed by endoscopic biopsy or pathology after surgery. The clinical data are now analyzed for reference. Clinical data analysis 1. Age and gender: The age of onset was 33 to 70 years old, and 40 to 59 years old was the majority (8 cases). There were 9 males and 4 females. The male to female ratio was 2.25:1. Second, lesions and pathological types: In this group of 13 cases of adenocarcinoma more common, a total of 11 cases, accounting for 84%. One case of leiomyosarcoma and lymphosarcoma accounted for 8%. From the lesion site, the ball was found in 1 case (7.7%), descending in 9 cases (69.2%), and transverse in 3 cases (23.1%). If the nipple is the boundary, there are 4 cases (30.7%) in the upper nipple and 6 cases in the nipple