The nodal neck level of sentinel lymph nodes in mucosal head and neck cancer
Section snippets
Methods
Patients included in this study were those who had sentinel node biopsy performed using a combination of radiocolloid and blue dye for primary intraoral mucosal malignancies. Ethical approval for this study was granted by the local research ethics committee. The technique for sentinel node biopsy has been described previously.18
Only those cases where the sentinel node pathology was a true indicator of the neck pathology were included. Thus, all true positive and true negative sentinel node
Results
One hundred and twenty-four sentinel nodes were harvested from 52 necks. The distribution of primary tumours is shown in Table 1. Results were considered by tumour site.
Discussion
This study was performed to map the spread of colloid and blue dye from primary site to sentinel node in 52 cases of true positive or true negative sentinel node biopsy. Although there were some unexpected sites of first echelon nodes most sentinel nodes were found as clinically expected in levels I–III. Of the 124 sentinel nodes that were harvested, 113 (91%) were found in the ipsilateral levels I–III.
Sentinel nodes were found in level IIb. Although level IIb is part of a neck dissection in
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