Hypopharyngeal NeoplasmsHypopharynxPharyngectomyLaryngeal NeoplasmsNeoplasms, Second PrimaryLarynxNeoplasmsLaryngectomyCarcinoma, Squamous CellPharyngeal NeoplasmsThyroid CartilageNeoplasms, Multiple PrimaryPancreatic NeoplasmsPharyngeal DiseasesNeoplasms, Radiation-InducedOropharyngeal NeoplasmsPharynxExocrine GlandsSolar ActivityCervicoplastyMaxillary Sinus NeoplasmsEpiglottisMouth NeoplasmsRetrospective StudiesFree Tissue FlapsOrgan Sparing TreatmentsSkin NeoplasmsNeoplasms, Cystic, Mucinous, and SerousNeck DissectionNeoplasm StagingPlummer-Vinson SyndromeParotid NeoplasmsKidney NeoplasmsOtolaryngologyBeesImmunohistochemistryLaryngopharyngeal RefluxHead and Neck NeoplasmsGastrointestinal NeoplasmsSalivary Gland NeoplasmsUrogenital NeoplasmsCombined Modality TherapyFollow-Up StudiesTomography, X-Ray ComputedCarcinoma, Adenoid CysticThyroid NeoplasmsCarcinoma, MucoepidermoidLaryngoscopySurvivorsCause of DeathNose NeoplasmsLung NeoplasmsHemangiosarcomaCarcinosarcomaCoalTumor Markers, BiologicalSurgical FlapsTreatment OutcomePrognosisRadiotherapyEndoscopyEsophagoscopy