title: Patterns of spread in carcinoma of the head and neck--a pictorial essay.
mesh_terms: D002277:Carcinoma / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000473:pathology; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D009361:Neoplasm Invasiveness; D009362:Neoplasm Metastasis