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Required area of lymph node sampling during segmentectomy for clinical stage IA non-small cell lung cancer
The Journal of Thoracic and Cardiovascular Surgery, 06/19/09

Nomori H et al. – Data suggest that segmental lymph nodes should be dissected at both the resected and nonresected segments during segmentectomy, especially for tumors in the anteriorly located segment, because the lymphatic flow from the anteriorly located segment can frequently go directly to the segmental lymph nodes of the posteriorly located segment.

Methods

Aim was to investigate the required area of lymph node sampling during segmentectomy, especially for segmental nodes at the nonresected segments
Distribution of sentinel nodes in pts with NSCLC who underwent segmentectomy were examined
94 pts with NSCLC were treated by using segmentectomy and dissection of lymph nodes
Anatomic locations of the segments were classified as either anterior or posterior
Correlations of anatomic location with the distribution of sentinel nodes at the segmental nodes were then examined

Results

Of the 94 pts, segmental nodes at both the resected and nonresected segments could be dissected in 42 pts
Segmental sentinel nodes were found at the resected segments in 64% of pts
This was significantly higher than that seen at the nonresected segments
47% of pts with tumors in the anteriorly located segments had segmental sentinel nodes at the nonresected segments
This was higher than that seen in pts with tumors in the posteriorly located segments

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