ExpertDDX: Head and Neck

Bronwyn E. Hamilton is Professor of Radiology, with a Courtesy Appointment in Otolaryngology - Head & Neck Surgery at Oregon Health and Science University in Portland, Oregon.

• Koch and Hamilton, Expert DDx Head and Neck Suprahyoid & Infrahyoid Anatomically Based DifferentialsParapharyngeal Space LesionPharyngeal Mucosal Space Lesion, NasopharynxPharyngeal Mucosal Space Lesion, OropharynxMasticator Space LesionBuccal Space LesionParotid Space MassCarotid Space LesionCarotid Artery LesionPerivertebral Space LesionBrachial Plexus LesionVisceral Space LesionCervical Tracheal LesionTracheoesophageal Groove LesionPosterior Cervical Space LesionCervicothoracic Junction LesionTMJ Mass LesionsCalcified TMJ LesionsTMJ Cysts Generic Imaging PatternsDiffuse Parotid DiseaseMultiple Parotid MassesFocal Retropharyngeal Space MassDiffuse Retropharyngeal Space DiseaseDiffuse Thyroid EnlargementFocal Thyroid MassInvasive Thyroid MassClinically Based DifferentialsCheek Mass Trismus Oral Cavity, Mandible & MaxillaAnatomically Based DifferentialsOral Mucosal Space/Surface LesionSublingual Space LesionSubmandibular Space LesionSubmandibular Gland LesionRoot of Tongue LesionHard Palate LesionMaxillary Bone LesionGeneric Imaging PatternsTooth-Related Mass, ScleroticTooth-Related Mass, CysticModality-Specific Imaging FindingsLow-Density Jaw Lesion, Sharply Marginated (CT)Low-Density Jaw Lesion, Poorly Marginated (CT)Ground-Glass Lesions of Mandible & Maxilla (CT)Hypopharynx & Larynx Anatomically Based DifferentialsHypopharyngeal LesionLaryngeal LesionGeneric Imaging PatternsEpiglottic EnlargementDiffuse Laryngeal SwellingSubglottic StenosisClinically Based DifferentialsVocal Cord Paralysis (Left)Vocal Cord Paralysis (Right)Stridor in ChildLymph Nodes Generic Imaging PatternsEnlarged Lymph Nodes in Neck in AdultAvidly Enhancing Lymph NodesEnlarged Lymph Nodes in Neck of ChildTransspatial, Multispatial, or Multilocation in Head and NeckGeneric Imaging PatternsAir-Containing Lesions in NeckSolid Neck Mass in InfantSolid Neck Mass in ChildCystic Neck Mass in ChildCystic-Appearing Neck Masses in AdultTransspatial Mass in ChildTransspatial Neck MassModality-Specific Imaging FindingsHyperdense Neck Lesion (CT)Low-Density Neck Lesion (CT)Hypervascular Neck Lesion (CT/MR)Clinically Based DifferentialsAngle of Mandible MassSupraclavicular MassSinus and Nose Anatomically Based DifferentialsSinonasal Anatomic VariantsGeneric Imaging PatternsNasal Septal PerforationCongenital Midline Nasal LesionFibroosseous & Cartilaginous LesionsInflammatory Patterns of SinusitisMultiple Sinonasal LesionsExpansile Sinonasal LesionNasal Lesion With Bone DestructionNasal Lesion Without Bone DestructionSinus Lesion Without Bone DestructionSinus Lesion With Bone DestructionFacial Bone LesionModality-Specific Imaging FindingsHyperdense Disease in Sinus Lumen (CT)Calcified Sinonasal Lesion (CT)T2 Hypointense Sinus Lesion (MR)Clinically Based DifferentialsNasal Obstruction in NewbornAnosmia-HyposmiaEpistaxis Traumatic Lesions of FaceOrbit Anatomically Based DifferentialsPreseptal LesionOcular Lesion, AdultOcular Lesion, ChildOptic Nerve-Sheath LesionIntraconal MassExtraconal MassLacrimal Gland LesionOrbital Wall LesionGeneric Imaging PatternsMicrophthalmosMacrophthalmosOptic Nerve Sheath Tram-Track SignExtraocular Muscle EnlargementLarge Superior Ophthalmic Vein(s)Ill-Defined Orbital MassCystic Orbital LesionsVascular Lesions of OrbitAccidental Foreign Bodies in OrbitSurgical Devices & Treatment Effects in OrbitModality-Specific Imaging FindingsIntraocular Calcifications (CT)Clinically Based DifferentialsLeukocoria Painless Proptosis in AdultPainful Proptosis in AdultRapidly Developing Proptosis in ChildInfectious & Inflammatory Orbital LesionsExtraocular Orbital Mass in ChildTemporal Bone Anatomically Based DifferentialsExternal Auditory Canal LesionMiddle Ear Lesion, ChildMiddle Ear Lesion, AdultInner Ear Lesion, AdultPetrous Apex LesionInner Ear Lesion, ChildFacial Nerve Lesion, Temporal BoneGeneric Imaging PatternsEnhancing Middle Ear LesionsExpansile-Destructive Petrous Apex LesionBony Lesions of Temporal BoneClinically Based DifferentialsConductive Hearing LossPeripheral Facial Nerve ParalysisVascular Retrotympanic MassPulsatile TinnitusTraumatic Lesions of Temporal BoneSecondary (Referred) OtalgiaSkull Base Anatomically Based DifferentialsNormal Skull Base Venous VariantsSkull Base Foraminal or Canal VariantsCongenital Anomalies of Skull BaseIntrinsic Skull Base LesionAnterior Skull Base LesionCribriform Plate LesionCentral Skull Base LesionSellar/Parasellar Mass With Skull Base InvasionUnilateral Cavernous Sinus MassBilateral Cavernous Sinus MassMeckel Cave LesionPosterior Skull Base LesionClival Lesion Jugular Foramen LesionDural Sinus Lesion, GeneralForamen Magnum MassCPA-IAC & Posterior FossaAnatomically Based DifferentialsSmall Internal Auditory CanalLarge Internal Auditory CanalCPA Mass, AdultPrepontine Cistern MassCisterna Magna MassPosterior Fossa Neoplasm, AdultPosterior Fossa Neoplasm, PediatricGeneric Imaging PatternsCystic CPA MassClinically Based DifferentialsHemifacial SpasmSensorineural Hearing Loss in AdultSensorineural Hearing Loss in ChildCranial Nerve & BrainstemAnatomically Based DifferentialsMidbrain LesionPontine LesionMedulla LesionClinically Based DifferentialsMonocular Vision LossBitemporal Heteronymous HemianopsiaHomonymous HemianopsiaOculomotor, Trochlear, or Abducens NeuropathyTrigeminal NeuropathyTrigeminal NeuralgiaComplex Cranial Nerve IX-XII NeuropathyHypoglossal NeuropathyHorner SyndromeGeneric Imaging PatternsEnhancing Cranial Nerve(s)