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Related Experiment Video

Updated: Apr 11, 2026

Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
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Sentinel node navigation surgery for lower rectal cancer.

Hidejiro Kawahara1, Kazuhiro Watanabe2, Hiroya Enomoto2

  • 1Department of Surgery, Kashiwa Hospital, Jikei University School of Medicine, Chiba, Japan kawahide@jikei.ac.jp.

Anticancer Research
|May 31, 2015
PubMed
Summary

Sentinel node navigation surgery can identify lateral sentinel lymph nodes (LSN) in T3 lower rectal cancer. This approach helps determine if lateral pelvic lymph node dissection is necessary, potentially avoiding overtreatment.

Keywords:
Lower rectal cancerlaparoscopic surgerylateral pelvic dissectionsentinel lymph node

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Area of Science:

  • Surgical Oncology
  • Rectal Cancer Management
  • Lymph Node Metastasis

Background:

  • Lateral pelvic lymph node metastasis occurs in 17% of T3 lower rectal cancer patients.
  • Preoperative detection of these metastases is challenging.
  • Sentinel node navigation surgery identifies lateral sentinel lymph nodes (LSN).

Purpose of the Study:

  • To evaluate the utility of LSN dissection in T3 lower rectal cancer.
  • To determine if LSN status can guide the need for lateral pelvic lymph node dissection (LPLD).

Main Methods:

  • Prospective study of 101 T3 lower rectal cancer patients (2001-2010).
  • LSN dissection performed for all patients.
  • LPLD performed only if mesorectal lymph nodes were positive.

Main Results:

  • 53 patients with negative mesorectal nodes and LSN had no recurrence in the lateral pelvis.
  • 48 patients with positive mesorectal nodes underwent LPLD.
  • Only 8 patients with a positive LSN also had positive lateral pelvic lymph nodes.

Conclusions:

  • Lateral pelvic lymph node dissection may not be required for all T3 lower rectal cancer patients.
  • LSN dissection is valuable for staging and surgical decision-making.
  • LSN status can help identify stage II disease during surgery.