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Comparison between the role of colonoscopy and CT virtual colonography in diagnosis of colorectal diseases /

Nehal Saleh Ahmed Shoukry Ismail

Comparison between the role of colonoscopy and CT virtual colonography in diagnosis of colorectal diseases / مقارنة بين دور المنظارالشرجى و المنظار الشرجى الأفتراضى بواسطة الأشعة المقطعية فى تشخيص أمراض القولون و المستقيم Nehal Saleh Ahmed Shoukry ; Supervised Lamiaa Ibrahim Abdelrahman , Ahmed Ali Gomaa Alshaal , Marwa Shaker Abdelfattah - Cairo : Nehal Saleh Ahmed Shoukry Ismail , 2018 - 98 P. : charts , facsimiles ; 25cm

Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of Radio-diagnosis

Colonoscopy is the standard modality for investigating lower GIT lesions. CTC is an alternative and less invasive modality. The aim of our study is to compare CTC and conventional colonoscopy results and to evaluate the accuracy of CTC for detecting colorectal lesions. This was documented by histopathology for all cases. Results; regardless of the size, CTC displayed 100% sensitivity and 91.7% specificity for detecting both colorectal polyps and masses, 0% sensitivity and100% specificity for ulcers and telangiectasia and 33.3% sensitivity and100% specificity for piles. We concluded that, CTC is a good alternative test compared to other colorectal cancer screening modalities because of its high sensitivity values in detecting masses and polyps >0.5 cm



Colonoscopy Colorectal cancer CT colonography