Đột biến BRAFV600E là một trong những yếu tố tiên lượng trong ung thư tuyến giáp có liên quan đến biểu hiện của GLUT-1, làm tăng khả năng bắt giữ FDG. Trong nghiên cứu này, chúng tôitiến hành nghiên cứu mối liên hệ giữa đột biến BRAFV600E, lâm sàng, mô bệnh họcvà 18F-fluoro-2-deoxyglucose (18F-FDG) ở bệnh nhân ung thư tuyến giáp (UTTG) thể biệt hóa kháng I-131. | MỐI LIÊN QUAN GIỮA ĐỘT BIẾN NGHIÊN CỨU KHOA HỌC BRAV600E MÔ BỆNH HỌC VÀ KHẢ NĂNG BẮT GIỮ 18F-FDG TRÊN HÌNH ẢNH PET CT SCIENTIFIC RESEARCH Ở BỆNH NHÂN UNG THƯ TUYẾN GIÁP KHÁNG I-131 Relationships between BRAFV600E mutation clinicopathologic factors and 18F-FDG avidity in radioiodine-refractory differentiated thyroid carcinoma patients Lê Ngọc Hà Mai Hồng Sơn Nguyễn Thị Nhung Ngô Thị Minh Hạnh Hoàng Quốc Trường Trần Ngọc Lương Nguyễn Thị Kim Dung Lê Ngọc Hà SUMMARY Objectives The BRAFV600E mutation is one of the prognostic factors in thyroid carcinoma related to GLUT-1 expression which increases 18F-FDG uptake. In this study we investigated the relationship between BRAFV600E mutation clinicopathologic factors and 18F-fluoro-2-deoxyglucose 18F-FDG avidity in radioiodine-refractory differentiated thyroid carcinoma. Methods Total 46 radioiodine-refractory DTC patients who underwent BRAFV600E analysis from the biopsy and 18F-FDG positron emission tomography computed tomography from 2011 to 2018. Semi-quantitative analysis of highest hypermetabolic lesion was accessed by automated polygonal regions of interest ROIs drawing on attenuation-corrected PET images the Workstation GE . The relationship between BRAF mutation clinicopathologic factors and 18F-fluoro-2-deoxyglucose 18F-FDG avidity was investigated. Results Patients with the BRAFV600E mutation present higher 18F-FDG uptake median of SUVmax 7 11 than those without mutation median of SUVmax 4 91 but the difference is not statisticcal significance p 0 236 . The tumor size p and distant metastases 0 03 were significantly associated with 18F-FDG uptake in univariate analysis. Aggressive histopathologic type of DTC is only the factor p related to FDG uptake significantly p in both univariate and multivariate analysis. Conclusion The aggressive and classic type of DTC were the factors significantly related to 18F-FDG avidity in both univariate and multivariate analysis. The effect BRAFV600E of .