Anatomy and Imaging of the Nasopharynx, Oropharynx, and Oral Cavity.

Owing to the complex anatomy, the appropriate selection of imaging modalities and interpretation of the nasopharynx, oropharynx, and oral cavity demand a comprehensive knowledge of the anatomic relationships within and among these regions, common pathologies, and interpretative nuances critical for treatment planning. This article outlines the crucial anatomy on multimodality cross-sectional imaging, anatomic relationships that frame various pathologies of the region, and the associated anatomically grounded considerations essential for treatment planning.