title: Re: Distinguishing second primary tumors from lung metastases in patients with head and neck squamous cell carcinoma.
authors.forename: P M
authors.initials: PM
authors.lastname: Harari
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000556:secondary*; D003937:Diagnosis, Differential; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000556:secondary*; D016609:Neoplasms, Second Primary / Q000175:diagnosis*