@ARTICLE{Agah, author = {Agah, SH. and Ghasemi, A. and Rezaei, M. and Ashayeri, N. and Fereshtehnejad, S.M. and Mohammad Sadeghi, H. and }, title = {Frequency Determination of Polyps and Colorectal Tumors Among Patients Who Underwent Colonoscopy in Shariati Hospital}, volume = {15}, number = {0}, abstract ={      Background & Aim: Colorectal cancer is the third most common cancer and the third leading cause of cancer death. Most often it is derived from an adenomatous polyp. Therefore, detection and treatment of these baseline polyps could potentially decrease the prevalence and incidence of colorectal cancers. One of these screening procedures is colonoscopy, which is more Precise than others like. Barium enema in detecting primitive and small polyps. In addition, colonoscopy has the added benefit that lesion can be removed during the same procedure. Thus, this study was performed to determine the frequency of polyps and colorectal tumors among patients who underwent colonoscopy in Shariati hospital between November 2000 and November 2002. Patients and Methods: This retrospective analytical cross-sectional study was performed on 993 patients who underwent colonoscopy in Shariati hospital from November 2000 to November 2002. Method of sampling was by census. All patients were evaluated for demographic variables, location and size of polyps and tumors by using a checklist. The data were collected, described and analyzed using SPSS V.11.5 sofware. Chi2 and Student t-test were performed in the data analysis. Results: Among 993 patients who were studied, 529 (53.3%) were males and 464 (46.7%) were females. The frequency of polyps and tumors in this study was 15.4% (153 of 993) and 4.8% (48 of 993), respectively. There was a significant association between the frequency of polyps and its location (P }, URL = {http://rjms.iums.ac.ir/article-1-1057-en.html}, eprint = {http://rjms.iums.ac.ir/article-1-1057-en.pdf}, journal = {Razi Journal of Medical Sciences}, doi = {}, year = {2009} }