Compared with SCC, BSCC is not an independent adverse prognostic factor for patients with head and neck cancer. The Surveillance, Epidemiology, and End Results analysis has limits, including lack of information regarding chemotherapy, but after controlling for disease and treatment variables, including neck dissection and radiotherapy, BSCC histology did not have an independent adverse prognostic effect on overall survival. The reported association between human papillomavirus and BSCC histology may explain the lower hazard ratio for death in patients with oropharynx BSCC.
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