小肠恶性平滑肌母细胞瘤在临床上较为少见,缺乏特异性症状,早期诊断较为困难。本文报告我们收治6例,将诊治体会分析如下。 1 临床资料本组男性3例,女性3例,年龄38～73岁,平均55岁。肿瘤位于十二指肠1例,空肠2例,回肠3例,均手术和病理得以证实。其中外生型3例,内生型2例,内外生型1例。肿瘤直径为4～16cm,平均12cm。经病理证实肿瘤肠系膜淋巴结转移2例,肝转移2例。临床表现有腹部肿块4例,肠梗阻2例。同时伴有消化道出血2例,肠穿孔腹膜炎1例。主要症状腹痛,腹胀,呕吐,体重下降。病程5天至1年半。辅助检查:急诊的呕血及肠梗阻腹膜炎3例开腹探查手术病理诊断外,余3例经低张性十二指肠造影 Malignant smooth muscle blastoma of the small intestine is rare in the clinic and lacks specific symptoms. Early diagnosis is difficult. This article reports that we treated 6 cases and analyzed the diagnosis and treatment as follows. 1 clinical data in this group of 3 males and 3 females, aged 38 to 73 years, an average of 55 years old. Tumor was located in 1 case of duodenum, 2 cases of jejunum, and 3 cases of ileum. All of them were confirmed by surgery and pathology. There were 3 cases of exogenous type, 2 cases of endogenous type, and 1 case of exogenous type. The diameter of the tumor is 4-16cm, with an average of 12cm. Pathologically confirmed tumor mesenteric lymph node metastasis in 2 cases, liver metastases in 2 cases. Clinical manifestations include abdominal mass in 4 cases and intestinal obstruction in 2 cases. Accompanied by gastrointestinal bleeding in 2 cases, 1 case of intestinal perforation peritonitis. The main symptoms were abdominal pain, bloating, vomiting, and weight loss. Duration from 5 days to one and a half years. Auxiliary examination: emergency vomiting blood and intestinal obstruction peritonitis 3 cases of laparotomy operation pathological diagnosis, the remaining 3 cases of low-tend duodenal angiography