Related Experiment Video
Updated: May 30, 2026

The Pocket-Creation Procedure of Endoscopic Submucosal Dissection for Large Rectal Laterally Spreading Tumors
Published on: February 13, 2026
[Morphological procedure for rectal cancer]
Abstract:
The morphological study of surgical specimens in rectal cancer involves assessment of the quality of mesorectumectomy, examination of serial sections of a tumor growth area, and study of the proximal, distal, and circulatory ends of resection as a criterion for the quality and efficacy of surgery. The circulatory end of resection is regarded as positive when it has tumor cells inside or within 1 mm of it and the performed surgery is unradical. The data obtained with the use of this technology make it possible to most fully estimate the site and extent of a tumor process, to identify a number of important prognostic factors, and to assess the quality of a performed surgical intervention and preoperative diagnosis. The procedure is adapted to the standard technological equipment of morbid anatomy units.
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