EURORAD ESR

Case 15574

Late diagnosis of labyrinthine (Michel) Aplasia in a 16 years old girl with congenital anacusis

Author(s)
Kadish Lucien K., Tiona Micheline, Amriss Omar, Moussali Nadia, El benna Naima

CHU IBN Rochd; casablanca, Morocco; Email:kadishkayij@gmail.com
 
Patient
female, 16 year(s)
 
 
  • Figure 1
    Normal anatomy of the innear ear on CT
     

    Axial section image Blue : Vestibule recess Red : Lateral semi circular canal Green : Vestibular aqueduct Orange : Posterior semi circular canal

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Axial section image Blue : Modiolus Brown : Cochlea apical turn Black : Cochlea middle turn Purple : Vestibule recess Light Blue : Posterior osseous ampulla Orange : Posterior semi circular canal

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Axial section image Black : Cochlea middle turn Brown : Cochlea basilar turn Yellow : round window

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Coronal section image Blue : Facial nerve canal tympanic segment Green : Facial nerve canal labyrinthine segment Red : Cochlea Purple : Hamulus

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Coronal section image Blue : Superior semi circular canal Red : Lateral semi circular canal Green : Vestibule recess Orange: Internal Acoustic Canal

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;
     
     
  • Figure 2
    Labyrinthine Aplasia: Left temporal bone CT
     

    Axial section image IAC: Internal acoustic Canal Blue: Malleus head Green: Incus body There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Axial section image Blue: Malleus neck Green: Incus long process There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Coronal section image also shows the absence of labyrinthine structures

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;
     
     
  • Figure 3
    Labyrinthine Aplasia: Right temporal bone CT
     

    Axial section image. IAC: Internal Acoustic Canal Blue: Malleus head Green: Incus body Orange: Facial nerve There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Axial section image. Blue: Malleus neck Green: Incus long process There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;

    Coronal section image also shows the absence of labyrinthine structures.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital;
     
     
Axial section image Blue : Vestibule recess Red : Lateral semi circular canal Green : Vestibular aqueduct Orange : Posterior semi circular canal
 
Axial section image Blue : Modiolus Brown : Cochlea apical turn Black : Cochlea middle turn Purple : Vestibule recess Light Blue : Posterior osseous ampulla Orange : Posterior semi circular canal
 
Axial section image Black : Cochlea middle turn Brown : Cochlea basilar turn Yellow : round window
 
Coronal section image Blue : Facial nerve canal tympanic segment Green : Facial nerve canal labyrinthine segment Red : Cochlea Purple : Hamulus
 
Coronal section image Blue : Superior semi circular canal Red : Lateral semi circular canal Green : Vestibule recess Orange: Internal Acoustic Canal
 
Axial section image IAC: Internal acoustic Canal Blue: Malleus head Green: Incus body There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.
 
Axial section image Blue: Malleus neck Green: Incus long process There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.
 
Coronal section image also shows the absence of labyrinthine structures
 
Axial section image. IAC: Internal Acoustic Canal Blue: Malleus head Green: Incus body Orange: Facial nerve There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.
 
Axial section image. Blue: Malleus neck Green: Incus long process There is absence of vestibule, cochlea, semicircular canals and vestibular aqueduct.
 
Coronal section image also shows the absence of labyrinthine structures.
 
 
 
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