Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors of the gastrointestinal tract arising from interstitial Cajal cells. A 54-year-old male patient without any comorbidities presented to the emergency department with complaints of abdominal distension, inability to pass flatus, and no motion for the past 2 days. Abdominal X-ray showed multiple air-fluid levels suggesting bowel obstruction. The patient was managed conservatively at first. Later, ultrasonography and contrast-enhanced computed tomography (CECT) of the abdomen were done, which revealed a mass lesion arising from the jejunum suggestive of GIST. The patient was taken up for exploratory laparotomy, and a tumor was found in the proximal jejunum around 10 cm from the duodenojejunal junction and encompassing the hepatic flexure of the transverse colon, with the omentum found adhered to the anterior surface of the lesion and distended proximal bowel loops. There was no evidence of mesenteric lymphadenopathy. The mass was resected along with the jejunal loop and the hepatic flexure of the colon, followed by end-to-end jejunojejunal anastomosis and end-to-end colocolic anastomosis. The patient's postoperative stay was uneventful. Imatinib therapy was started following histopathological confirmation and continued. The patient was followed up for 1 year postoperatively with CECT of the abdomen every 6 months, with no evidence of recurrence or any gastro-intestinal symptoms.

中文翻译：

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空肠的巨大胃肠道间质瘤表现为肠梗阻：罕见的表现。

胃肠道间质瘤（GIST）是由间质性Cajal细胞引起的胃肠道间质肿瘤。一名54岁的无合并症的男性患者因出现腹胀，无法通过肠胃气胀，在过去2天没有运动而出现在急诊科。腹部X线检查显示多个气液水平，提示肠梗阻。起初患者保守治疗。后来，对腹部进行了超声检查和对比增强的计算机体层摄影（CECT），发现了空肠提示GIST引起的肿块。该患者接受了探索性剖腹手术，并在距十二指肠空肠交界处约10 cm处的空肠近端发现了一个肿瘤，该肿瘤包括横结肠的肝脏弯曲，大网膜附着在病灶的前表面，并扩大近端肠bow。没有证据表明肠系膜淋巴结肿大。切除肿块以及空肠环和结肠的肝弯曲，然后进行端到端空肠空肠吻合和端到端结肠吻合。病人的术后逗留很顺利。在组织病理学证实后开始伊马替尼治疗，并继续治疗。术后每6个月对腹部进行CECT随访1年，无复发或胃肠道症状的迹象。其次是端到端的空肠空肠吻合和端到端的结肠吻合。病人的术后逗留很顺利。在组织病理学证实后开始伊马替尼治疗，并继续治疗。术后每6个月对腹部进行CECT随访1年，无复发或胃肠道症状的迹象。其次是端到端的空肠空肠吻合和端到端的结肠吻合。病人的术后逗留很顺利。在组织病理学证实后开始伊马替尼治疗，并继续治疗。术后每6个月对腹部进行CECT随访1年，无复发或胃肠道症状的迹象。