label: Oropharyngeal p16INK4a-Negative Squamous Cell Carcinoma
label_lc: oropharyngeal p16ink4a-negative squamous cell carcinoma
description: "An oropharyngeal squamous cell carcinoma which is negative for p16INK4a by immunohistochemistry. This negative immunohistochemistry result does not exclude human papillomavirus infection."