A PROSPECTIVE STUDY OF ROLE OF MDCT IN EVALUATION OF COLORECTAL LESIONS WITH HISTOPATHOLOGICAL CORRELATION

Abstract

Introduction: Multidetector computed tomography (MDCT) is increasingly useful technique in evaluation of the intestinal diseases, which allows evaluation of bowel diseases as well as extra-intestinal disease [1]. Thickening of the bowel wall is the commonly identied abnormality on CT in case of colorectal lesions [2]. Colorectal lesions can present as a mass or focal/diffuse bowel wall thickening, which may be associated with perienteric abnormalities. MDCTprovides images of the bowel wall and extra colonic tissues in one setting. MDCTprovides rapid acquisition with thinner collimation, allowing for multiphase studies with improved resolution [3]. Purpose: Present study aimed to characterize wall thickening in patients with colorectal lesions as either benign or malignant based on criteria specic to CTimaging using histopathology as gold standard. Material and methods: This prospective, correlative study consisted of people who were suspected to have large bowel lesions and referred to radiodiagnosis department at apollo hospital, hyderabad. Once a bowel wall thickening was detected, their radiologic features were analyzed by using criteria specic to CT imaging and characterized as either benign or malignant. Finally, the radiological diagnosis was correlated with histopathology. Results:Atotal of 75 participants were included (mean age: 61-70; 42[56%] men; 33[44%] women).Of these, all 56 malignant lesions and 17 of 19 benign lesions were correctly diagnosed in CT with a sensitivity of 96.43% and 78.95% respectively (P= .0001). Except 2 cases with inammatory lesions, who were diagnosed as malignant in CT. Conclusion: MDCThas a high predictive value in the diagnosis and differentiation of benign and malignant lesions of the large bowel.