title: [Multiple primary tumors in head and neck oncology].
abstract: After establishing the conditions for considering tumours to be of the second primary type, these are classified into groups based on the chronological relation among the different lesions. According to placement, we differentiate some specific locations, which confer special characteristics to each case. The case histories of a series of patients, suffering from multiple primary tumours, are presented, covering each of the categories of the preceding classifications by typical clinical cases. Finally, a discussion is undertaken of the conceptual, diagnostic and therapeutic peculiarities which make these patients all too often difficult to interpret.
authors.affiliation: Servicio de ORL del Hospital Clínico Universitario, Facultad de Medicina de Valladolid.
authors.forename: J
authors.initials: J
authors.lastname: Bachiller
authors.forename: L M
authors.initials: LM
authors.lastname: Gil-Carcedo
authors.forename: P
authors.initials: P
authors.lastname: Santos
authors.forename: A
authors.initials: A
authors.lastname: Sancho
mesh_terms: D000368:Aged; D002291:Carcinoma, Papillary / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000473:pathology; D002295:Carcinoma, Transitional Cell / Q000473:pathology; D004428:Ear Neoplasms / Q000473:pathology; D006258:Head and Neck Neoplasms / Q000473:pathology; D006801:Humans; D007822:Laryngeal Neoplasms / Q000473:pathology; D008175:Lung Neoplasms / Q000473:pathology; D008297:Male; D008441:Maxillary Neoplasms / Q000473:pathology; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology; D014062:Tongue Neoplasms / Q000473:pathology; D001749:Urinary Bladder Neoplasms / Q000473:pathology
vernacular_title: Tumores primarios múltiples en oncología de cabeza y cuello.