Colorectal Carcinoma: Local Tumor Staging and Assessment of Lymph Node Metastasis by High-Resolution MR Imaging in Surgical SpecimensReport as inadecuate




Colorectal Carcinoma: Local Tumor Staging and Assessment of Lymph Node Metastasis by High-Resolution MR Imaging in Surgical Specimens - Download this document for free, or read online. Document in PDF available to download.

International Journal of Biomedical ImagingVolume 2009 2009, Article ID 659836, 10 pages

Research Article

Department of Diagnostic Radiology and Oncology, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8519, Japan

Department of Oral and Maxillofacial Radiology, Tokyo Medical and Dental University, Tokyo 113-8519, Japan

Department of Surgery, Tokyo Medical and Dental University, Tokyo 113-8519, Japan

Department of Pathology, Tokyo Medical and Dental University, Tokyo 113-8519, Japan

Received 17 June 2009; Accepted 16 September 2009

Academic Editor: Guowei Wei

Copyright © 2009 Ichiro Yamada et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. To assess the accuracy of high-resolution MR imaging as a means of evaluating mural invasion and lymph node metastasis by colorectal carcinoma in surgical specimens. Materials and Methods. High-resolution T1-weighted and T2-weighted MR images were obtained in 92 surgical specimens containing 96 colorectal carcinomas. Results. T2-weighted MR images clearly depicted the normal colorectal wall as consisting of seven layers. In 90 94% of the 96 carcinomas the depth of mural invasion depicted by MR imaging correlated well with the histopathologic stage. Nodal signal intensity on T2-weighted images 93% and nodal border contour 93% were more accurate than nodal size 89% as indicators of lymph node metastasis, and MR imaging provided the highest accuracy 94%–96% when they were combined. Conclusion. High-resolution MR imaging is a very accurate method for evaluating both mural invasion and lymph node metastasis by colorectal carcinoma in surgical specimens.





Author: Ichiro Yamada, Norio Yoshino, Akemi Tetsumura, Satoshi Okabe, Masayuki Enomoto, Kenichi Sugihara, Jiro Kumagai, and Hitoshi

Source: https://www.hindawi.com/



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