Cholesteatoma, Middle EarCholesteatomaEar, MiddleMastoidEar OssiclesTympanoplastyEar DiseasesEar CanalTympanic MembraneEarOtoscopyPrevalenceTemporal BoneOtitis MediaOtitis Media with EffusionOtologic Surgical ProceduresOtitis Media, SuppurativeMiddle Ear VentilationEar NeoplasmsHearing Loss, ConductiveEar, InnerEustachian TubeIncusChinchillaMastoiditisAcoustic Impedance TestsEar, ExternalMalleusPetrous BoneCochlear DiseasesStapesProflavineOssicular ReplacementCerebrospinal Fluid OtorrheaSecond-Look SurgeryOssicular ProsthesisStapediusAudiometry, Pure-ToneAudiometryCranial Fossa, MiddleEcho-Planar ImagingRound Window, EarTensor TympaniHearingBone ConductionGerbillinaeTomography, X-Ray ComputedHaemophilus influenzaeSemicircular CanalsFistulaHearing LossDiffusion Magnetic Resonance ImagingOptical ImagingSkull Neoplasms