Imaging Diagnosis of Colorectal Cancer

Ah Young Kim

doi:10.5124/jkma.2010.53.7.562

J Korean Med Assoc > Volume 53(7); 2010 > Article

Kim: Imaging Diagnosis of Colorectal Cancer

Focused Issue of This Month

Colorectal Cancer

Journal of the Korean Medical Association

Journal of the Korean Medical Association 2010; 53(7): 562-568.

Published online: July 06, 2010

DOI: http://dx.doi.org/10.5124/jkma.2010.53.7.562

Imaging Diagnosis of Colorectal Cancer

Ah Young Kim, MD

Department of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.

Corresponding author: Ah Young Kim. aykim@amc.seoul.kr

Received May 31, 2010 Accepted June 14, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Recently, treatment strategy of rectal cancer has undergone a dramatic change. Application of total mesorectal excision and preoperative chemoradiation therapy (PCRT) has become standard procedure for locoregional and locally advanced rectal cancer, respectively. Functional and morphological radiologic evaluation as well as multidisciplinary approach is both essential for planning patient-specific therapy. In other words, the needs for more accurate T-and N-staging and assessment of circumferential resection margin, both before and after PCRT, are increasing rapidly. Although there is no consensus on the role of diagnostic imaging such as endorectal ultrasonography, computed tomography and magnetic resonance imaging (MRI), in evaluation of rectal cancer patient so far, MRI is emerging as an essential imaging modality with superior trssue contrast and multiplanar approach.

Rectal cancer; Magnetic resonance imaging; CT; Endorectal US

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