Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Incidence of synchronous appendiceal neoplasm in patients with colorectal cancer and its clinical significance | World Journal of Surgical Oncology BioMed Central Research Incidence of synchronous appendiceal neoplasm in patients with colorectal cancer and its clinical significance Varut Lohsiriwat Akkrarash Vongjirad and Darin Lohsiriwat Open Access Address Department of Surgery Faculty of Medicine Siriraj Hospital Mahidol University Bangkok 10700 Thailand Email Varut Lohsiriwat - bolloon@ Akkrarash Vongjirad - akkrarash@ Darin Lohsiriwat - sidls@ Corresponding author Published 2 June 2009 Received 8 March 2009 World Journal of Surgical Oncology 2009 7 51 doi 1477-7819-7-5 1 Accepted 2 June 2009 This article is available from http content 7 1 51 2009 Lohsiriwat et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The aims of this study were to evaluate the incidence of synchronous appendiceal neoplasm in patients with colorectal cancer and to determine its clinical significance. Methods Pathological reports and medical records were reviewed of patients with colorectal adenocarcinoma who underwent oncological resection of the tumor together with appendectomy at the Faculty of Medicine Siriraj Hospital Mahidol University Thailand between September 2000 and April 2008. Results This study included 293 patients with an average age of 62 years range 19-95 and 51 percent were male. Of the patients studied 228 78 percent had right hemicolectomy whereas the others 22 percent had surgery for left-sided colon cancer or rectal cancer. One patient percent had epithelial appendiceal neoplasm mucinous cystadenoma and 3 patients percent had metastatic colorectal cancer in the mesoappendix. However the presence of synchronous appendiceal tumors and or metastasis did