tailieunhanh - báo cáo khoa học: "Successful treatment of a free-moving abdominal mass with radiation therapy guided by conebeam computed tomography: a case report"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Successful treatment of a free-moving abdominal mass with radiation therapy guided by conebeam computed tomography: a case report | Dabaja et al. Journal of Medical Case Reports 2010 4 329 http content 4 1 329 jAg JOURNALOF medical ÌỤr case REPORTS CASE REPORT Open Access Successful treatment of a free-moving abdominal mass with radiation therapy guided by conebeam computed tomography a case report 1 1 2 1 1 1 Bouthaina Dabaja Kelly J Perrin Jorge E Romaguera Patricia Horace Christine F Wogan Ferial Shihadeh Mohammad R Salehpour3 Abstract Introduction Because tumors in the abdomen can change position targeting these tumors for radiation therapy should be done with caution use of daily image-guided radiation therapy is advised. Case presentation We report the case of a 72-year-old Caucasian man with recurrent mantle cell lymphoma who was referred for palliative radiation therapy for an abdominopelvic tumor. Computed tomography was used to generate images for radiation treatment planning. Comparison of those planning images with a positron emission tomography computed tomography scan ordered during the planning period revealed that the tumor had moved from one side of the abdomen to the other during the three-day interval between scans. To account for this unusual tumor movement we obtained a second set of planning computed tomography scans and used a Varian cone-beam computed tomography scanner with on-board imaging capability to target the tumor before each daily treatment session leading to successful treatment and complete resolution of the mass. Conclusion Abdominal masses associated with the mesentery should be considered highly mobile thus radiation therapy for such masses should be used with the utmost caution. Modern radiation therapy techniques offer the ability to verify the tumor location in real time and shift the treatment ports accordingly over the course of treatment. Introduction One of the most important challenges for the safe delivery of radiation therapy is the accurate application of three-dimensional conformal radiation therapy 3DCRT . The .