Mục tiêu: Phân tích giá trị của các dấu hiệu hình ảnh trong chẩn đoán phân biệt các loại u ruột non (URN) thường gặp tại Việt Nam. Đối tượng và phương pháp nghiên cứu: Nghiên cứu hồi cứu, mô tả cắt ngang, chọn tất cả những bệnh nhân (BN) được chẩn đoán ra viện là URN tại BV Đại học Y Dược Thành phố Hồ Chí Minh và BV Chợ Rẫy từ 01/2015 đến 5/2018, có chụp CLVT với thuốc tương phản tĩnh mạch, có kết quả giải phẫu bệnh xác định là u nguyên phát ruột non. | GIÁ TRỊ CHỤP CẮT LỚP ĐA DÃY NGHIÊN CỨU KHOA HỌC TRONG CHẨN ĐOÁN PHÂN BIỆT SCIENTIFIC RESEARCH CÁC U NGUYÊN PHÁT THƯỜNG GẶP Ở RUỘT NON The role of MDCT in the differential diagnosis of the small bowel tumors Lê Duy Mai Huyên Võ Tấn Đức SUMMARY Objectives The purpose of the this study was to analyze imaging roles to assessthe diagnostic capacity for differentiating the common primary small bowel tumors. Methods We performed a retrospective study from the medical database from January 2015 to May 2018 at University medical center and Cho Ray hospital. The inclusion criteria were as follows pathologically proven primary small bowel neoplasms andpatients were performed MDCT with intravenous contrast media. Radiologist were blinded to the pathological information reviewed the image findings according to the data collection paper. Radiologist collects the characteristics of neoplasm such as anatomical distribution growth enhancement wall thickening patterns size hyperplasia vascular on tumor surfaces and lymph node characteristics. Then comparing each findings to pathology report to access specificity sensitivity and positive predictive value PPV of them. Results A total of 98 patients met the criteria for analysis in thepresent retrospective study 31 adenocarcinomas 22 lymphomas 30 GISTs anf 15 others. The extramural growth pattern isreliable prediction of GIST with PPV of . All of GISTs show moderate to avid enhancement. Tumor density of greater than or equal to 110 HU is likely to be GIST with PPV . Proliferation of blood vessels on tumor surfaces can help discriminate GIST from the others with PPV of92 . Bowel wall thickening is the common patternof adenocarcinoma and lymphoma. Apple-core-like shoulder defect and focal involvement are probably findings of adenocarcinoma with PPV of and respectively. Aneurysmal dilatation of the lumen and marked thickening wall bowel equal or greater than 25mm can strongly suggest lymphoma with PPV of .
