Multiple malignancies in patients with head and neck cancer.
D006258:Head and Neck Neoplasms; D006801:Humans; D007822:Laryngeal Neoplasms; D008048:Lip Neoplasms; D009062:Mouth Neoplasms; D009378:Neoplasms, Multiple Primary; D010157:Palatal Neoplasms; D010255:Paranasal Sinus Neoplasms; D010307:Parotid Neoplasms; D010610:Pharyngeal Neoplasms; D011379:Prognosis; D012878:Skin Neoplasms; D013964:Thyroid Neoplasms; D014062:Tongue Neoplasms; D014067:Tonsillar Neoplasms