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Related Experiment Videos

Laparoscopic sentinel node mapping for colorectal cancer using infrared ray laparoscopy.

Koichi Nagata1, Shungo Endo, Eiji Hidaka

  • 1Digestive Disease Center, Showa University Northern Yokohama Hospital, 35-1 Chigasakichuo, Tsuzuki-ku, Yokohama 224-8503, Japan. Nagata7@aol.com

Anticancer Research
|July 11, 2006
PubMed
Summary

Infrared ray laparoscopy (IRL) significantly improves sentinel lymph node (SN) mapping in colorectal cancer patients compared to conventional laparoscopy (CL). IRL offers superior visualization, proving effective for early-stage tumors.

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Area of Science:

  • Surgical Oncology
  • Minimally Invasive Surgery
  • Diagnostic Imaging

Background:

  • Sentinel lymph node (SN) mapping is crucial for colorectal cancer staging.
  • Conventional laparoscopy (CL) faces challenges in SN identification due to mesenteric adipose tissue.
  • Infrared ray laparoscopy (IRL) offers a potential solution for improved SN visualization.

Purpose of the Study:

  • To compare the efficacy of SN mapping using conventional laparoscopy (CL) versus infrared ray laparoscopy (IRL).
  • To evaluate SN mapping during laparoscopy-assisted colectomy (LAC) in colorectal cancer patients.

Main Methods:

  • 48 colorectal cancer patients undergoing LAC were enrolled.
  • Tumor localization was confirmed using intra-operative fluoroscopy and marking clips.

Related Experiment Videos

  • Indocyanine green dye was injected peritumorally for SN staining.
  • SNs were visualized using both CL and IRL techniques.

    • Main Results:

    • Successful dye injection and tumor localization were achieved in all patients.
    • IRL demonstrated a five-fold improvement in SN identification compared to CL.
    • IRL showed no false-negative cases for T1 and T2 stage colorectal cancer.

    Conclusions:

    • SN mapping with IRL is superior to CL for colorectal cancer surgery.
    • IRL-guided SN mapping is a feasible and effective technique for early-stage (T1, T2) colorectal tumors.