Clinical and Pathologic Determinants of Regional Metastases
2016
ease did not undergo elective dissection and later developed regional metastases. In all patients, survival was adversely impacted by the presence or later development of regional metastases (P<.001). Two- and 5-year survival rates for patients with no cervical metastases were 0.91 and 0.85, respectively, while for those with cervical metastases, the survival at 2 and 5 years declined to 0.72 and 0.59. More importantly, the 2- and 5-year survivals of patients with clinically NO necks who were found to have lymph node metastases histologically after neck dissection were 1.00 and 0.78. This contrasts with the 0.50 survival rate at 2 and 5 years for those who did not undergo elective dissection and later developed cervical metastases (P=.36). Conclusions: Patients with adverse clinical and pathologic features, even in the absence of demonstrable neck disease, are at risk for harboring regional metastases. Elective treatment of the cervical lymphatics should be considered for patients with primary tumors that overlie the
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