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21-1.80]), ulceration (aOR 1.74 [95% CI 1.48-2.05]), and mitoses (aOR 1.86 [95% CI 1.36-2.54]). Factors associated with a decreased risk of occult nodal metastasis included female **** (aOR 0.80 [0.67-0.94]) and desmoplastic histology (aOR 0.37 [95% CI 0.24-0.59]). Between the SEER database and the NCDB, factors associated with occult nodal involvement were similar except for nodular histology and female ****, which did not demonstrate significance in the NCDB. Conclusion Regarding clinically node-negative CHNM, the SEER database and the NC