Cholesteatoma, Middle EarCholesteatomaEar, MiddleMastoidEar OssiclesTympanoplastyEar DiseasesEar CanalTympanic MembraneEarOtoscopyTemporal 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-ToneCranial Fossa, MiddleAudiometryEcho-Planar ImagingRound Window, EarTensor TympaniHearingBone ConductionGerbillinaeTomography, X-Ray ComputedHaemophilus influenzaeSemicircular CanalsFistulaDiffusion Magnetic Resonance ImagingOptical ImagingSkull Neoplasms