title: Squamous cell carcinoma arising in a pharyngoesophageal diverticulum.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D004240:Diverticulum / Q000150:complications* / Q000601:surgery; D004936:Diverticulum, Esophageal / Q000150:complications* / Q000601:surgery; D004938:Esophageal Neoplasms / Q000209:etiology*; D004945:Esophagoscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010608:Pharyngeal Diseases / Q000150:complications* / Q000601:surgery; D010610:Pharyngeal Neoplasms / Q000209:etiology*