Encyclopedia of Diagnostic Imaging

2008 Edition
| Editors: Albert L. Baert

Circumferential Resection Margin

Reference work entry
DOI: https://doi.org/10.1007/978-3-540-35280-8_501

The circumferential resection margin is the distance from rectal tumour to the resection plane (mesorectal fascia) when viewed in a transverse section through the rectum. A complete resection of rectal cancer is defined as a CRM of >2 mm. The CRM can be predicted preoperatively on MRI. In this way, radiologist can predict a narrow margin and indicate at which location a wider excision is needed for radical resection.

 Rectal Carcinoma

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© Springer-Verlag Berlin Heidelberg New York 2008