Table 1 Cervical lymph node metastasis in orthotopic HNSCC mouse model

Number of positive cervical lymph nodes

42/66 (63.6%)

31/68 (45.6%) *

Extent of tumor cell spread within positive lymph nodes:

  Extensive spread

33/42 (78.6%)

 8/31 (25.8%) ****

  Subcapsular

 9/42 (21.4%)

23/31 (74.2%) ****