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Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
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Lymph nodes detection and the mesorectal excision quality evaluation.

M Grega, M Vjaclovský, R Chmelová

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    Summary

    Implementing a defined surgical protocol significantly increased lymph node yield in rectal cancer patients, aiding accurate staging and treatment. This protocol ensures the recommended lymph node count is met across all age groups.

    Keywords:
    circumferential resection margin (CRM)colorectal carcinomalymph nodes identiffication and harvesting and examinationmesorectal excisionstage according to TNM classification and Dukes classification

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    Area of Science:

    • Oncology
    • Surgical Pathology
    • Colorectal Cancer Research

    Background:

    • Accurate lymph node count is crucial for rectal cancer management post-resection.
    • Current guidelines recommend a minimum of 12 lymph nodes, but this is challenging in certain patient groups.
    • Standardized protocols may improve lymph node harvesting, especially after neoadjuvant therapy.

    Purpose of the Study:

    • To evaluate the impact of a defined surgical protocol on lymph node yield in rectal cancer patients.
    • To assess if the protocol improves lymph node counts in specific demographics and treatment groups.

    Main Methods:

    • A comparative study design examining patients before and after protocol implementation.
    • Analysis of harvested lymph node counts, stratified by age and gender.
    • Evaluation of lymph node yield in patients who received neoadjuvant therapy.

    Main Results:

    • Average lymph node count increased from 10 to 15 post-protocol implementation.
    • For patients receiving neoadjuvant therapy, lymph node counts rose from 7 to nearly 14.
    • The recommended lymph node count was achieved in all age groups, with a 4% increase in positive node detection in neoadjuvant therapy patients.

    Conclusions:

    • A multidisciplinary approach and defined surgical protocols enhance lymph node detection in rectal cancer.
    • Improved lymph node yield facilitates better patient management and treatment planning.
    • Standardized protocols are beneficial for colorectal cancer care, particularly in optimizing pathological assessment.