Neoplasms, Multiple PrimaryNeoplasms, Second PrimaryNeoplasms, Radiation-InducedNeoplasmsHead and Neck NeoplasmsCarcinoma, Squamous CellRadiotherapySolar ActivityIncidenceSurvivorsSkin NeoplasmsFollow-Up StudiesLung NeoplasmsRisk FactorsRetrospective StudiesPancreatic NeoplasmsRetinoblastomaIsotretinoinMouth NeoplasmsRiskNeoplasm StagingHodgkin DiseaseNeoplasm Recurrence, LocalBreast NeoplasmsRegistriesThyroid NeoplasmsOtorhinolaryngologic NeoplasmsKidney NeoplasmsUrogenital NeoplasmsImmunoproliferative DisordersCarcinoma, Adenoid CysticCause of DeathParotid NeoplasmsCarcinoma, MucoepidermoidCohort StudiesCarcinosarcomaSalivary Gland NeoplasmsTime FactorsAge FactorsGastrointestinal NeoplasmsCombined Modality TherapyHemangiosarcomaSurvival RateAdenocarcinomaNervous System NeoplasmsCarcinomaTooth ExfoliationLaryngeal NeoplasmsPrognosisEye NeoplasmsMelanomaSurvival AnalysisTomography, X-Ray ComputedOropharyngeal NeoplasmsProportional Hazards ModelsImmunohistochemistryTaiwanNose NeoplasmsLip NeoplasmsRisk AssessmentMaxillary Sinus NeoplasmsOvarian NeoplasmsNeoplasm MetastasisGermany, WestLacrimal Apparatus DiseasesLeiomyosarcomaParanasal Sinus NeoplasmsNeoplasms, Cystic, Mucinous, and SerousDeath CertificatesSEER ProgramStomach Neoplasms