Reproducibility of Depth of Extramural Tumor Spread and Distance to Circumferential Resection Margin at Rectal MRI: Enhancement of Clinical Guidelines for Neoadjuvant Therapy

Abstract

Measurements of extramural tumor spread are more reproducible among different observers than are 5-mm distance measurements to the anticipated circumferential resection margin. This factor should be taken into account in the preparation and implementation of guidelines for neoadjuvant therapy for rectal cancer.