Role of MRI in Detection and Local Staging of Rectal Cancer

Abstract

Background: Colorectal cancer is one of the most frequent causes of cancer-related death worldwide. An accurate preoperative rectal cancer staging is crucial to the correct management of the disease. Despite great controversy around this issue, pelvic magnetic resonance is said to be the standard modality. Aim of study: The aim of this study is to assess the role of MRI in detection and local staging of rectal cancer Patients and methods: 30 patients with rectal carcinoma were included with MRI and histopathological assessment of cancer staging to evaluate MRI accuracy. All patients received preoperative neoadjuvant chemotherapy. Results: T3 staging with MRI, calculation of sensitivity, specificity, Negative and positive Predictive value were 73.3%, 40%, 60% and 55% respectively. T4 staging with MRI, calculation of sensitivity, specificity, Negative and positive Predictive value were 100%, 77%, 100% and 40% respectively. Conclusion: MRI has a good sensitivity for tumor staging and nodal staging.