Pathological risk factors stratification in pN3b oral cavity squamous cell carcinoma: Focus on the number of positive nodes and extranodal extension

Patients in the pN+ ≥8/ENE ≥5 subgroup have an unfavorable prognosis and their classification as pN3b is advisable. In contrast, patients in the pN+ ≤7/ENE ≤4 subgroup should be classified as pN3a.