Hypopharyngeal NeoplasmsHypopharynxPharyngectomyLaryngeal NeoplasmsLarynxCervicoplastyLaryngectomyPharyngeal NeoplasmsCarcinoma, Squamous CellOropharyngeal NeoplasmsEsophagoscopyNeoplasms, Second PrimaryCisplatinThyroid CartilageCombined Modality TherapyRetrospective StudiesPharyngeal DiseasesNeoplasm StagingTreatment OutcomeFollow-Up StudiesPharynxExocrine GlandsSurvival RateEpiglottisFree Tissue FlapsOrgan Sparing TreatmentsNeck DissectionPlummer-Vinson SyndromeOtolaryngologyBeesLaryngopharyngeal Reflux