[Intraoperative sentinel lymph node detection in colon cancer resection - preliminary results]

Area of Science:

• Oncology
• Surgical Pathology

Background:

• Sentinel lymph node (SLN) biopsy is a standard in melanoma and breast cancer staging.
• Its application in colon cancer requires further evaluation for feasibility and impact on lymph node yield.

Purpose of the Study:

• To assess the efficacy of intraoperative sentinel node detection in colon cancer patients.
• To compare lymph node counts between sentinel node biopsy and standard resection.

Main Methods:

• Prospective study of elective colon cancer resections with sentinel lymph node identification using patent blue dye.
• Comparison with a historical control group (2011) undergoing standard resection.
• Histopathological examination of both sentinel and non-sentinel lymph nodes.

Main Results:

• The study group (73 patients) had a higher average lymph node count (15.97) compared to the control group (12.73).
• Sentinel node positivity was found in 8 of 22 evaluable patients (36.36% sensitivity).
• Two patients were classified as pN1c, indicating micrometastases.

Conclusions:

• Intraoperative sentinel lymph node detection is a practical and achievable method in colon cancer surgery.
• The primary benefit observed is an increased number of lymph nodes recovered per specimen, potentially aiding more accurate staging.