MediastinitisMediastinumMediastinal NeoplasmsSternumNegative-Pressure Wound TherapySternotomySurgical Wound InfectionRetropharyngeal AbscessMediastinal DiseasesThoracotomyDebridementMediastinal CystPeriodontal AbscessFocal Infection, DentalCardiac Surgical ProceduresWound Closure TechniquesEsophageal PerforationTomography, X-Ray ComputedSclerosisRadiography, ThoracicSurgical Wound DehiscenceTherapeutic IrrigationOmentumSuperior Vena Cava SyndromeDrainageSurgical FlapsMediastinoscopyMycoplasma hominisFatal OutcomeEsophageal FistulaTreatment OutcomeMediastinal EmphysemaGoiter, SubsternalCoronary Artery BypassSuppurationPostoperative ComplicationsThymus Neoplasms