EURORAD ESR

Case 14843

Chondromyxoid fibroma of the mastoid

Author(s)
Nicolas De Vos1, 2
David Creytens3
Mariėtte De Cock4
Filip Vanhoenacker1, 2, 5

1. Department of Radiology, Ghent University Hospital, Ghent University, Ghent
2. Department of Radiology, AZ Sint-Maarten Duffel-Mechelen
3. Department of Pathology, Ghent University Hospital, Ghent University, Ghent
4. Department of Otorhinolaryngology, AZ Sint-Maarten, Duffel-Mechelen
5. Department of Radiology, Antwerp University Hospital, Antwerp University, Antwerp
 
Patient
female, 21 year(s)
 
 
  • Figure 1
    Axial T1-WI (A) and T2-WI (B)
     

    Axial T1-weighted image (T1-WI) shows a space-occupying lesion of low signal intensity (SI) in the mastoid (asterisk).

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Education; Special Focus: Tissue characterisation;

    Axial T2-weighted image (T2-WI) shows a space-occupying lesion of heterogeneous intermediate to high SI in the mastoid (asterisk).

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Education; Special Focus: Tissue characterisation;
     
     
  • Figure 2
    Axial DWI (A) and ADC maps (B)
     

    Axial diffusion weighted image (DWI) shows no significant diffusion restriction (asterisk).

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Education; Special Focus: Tissue characterisation;

    Axial apparent diffusion coefficient (ADC) map shows no significant diffusion restriction (asterisk)

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Education; Special Focus: Tissue characterisation;
     
     
  • Figure 3
    Axial T1-WI after intravenous administration of gadolinium-based contrast medium

    On axial T1-WI after intravenous administration of gadolinium-based contrast medium, the lesion shows clear enhancement (asterisk), with exception of the anterior part, which does not enhance (arrow).

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Contrast agent-intravenous; Special Focus: Tissue characterisation;
     
     
  • Figure 4
    Axial cone-beam computed tomography of the left mastoid
     

    Axial cone-beam computed tomography confirms the destructive osteolytic space-occupying lesion in the left mastoid (asterisk), with erosion of the facial canal (arrow)

     
    Area of Interest: Head and neck; Imaging Technique: CT; Procedure: Education; Special Focus: Tissue characterisation;

    Axial cone-beam computed tomography confirms the destructive osteolytic space-occupying lesion in the left mastoid (asterisk), with erosion of the posterior wall of the external acoustic meatus (arrow).

     
    Area of Interest: Head and neck; Imaging Technique: CT; Procedure: Education; Special Focus: Tissue characterisation;
     
     
  • Figure 5
    Overview of all published cases of CMF of the mastoid

    Overview of all published cases of chondromyxoid fibroma (CMF) in the mastoid

     
    Area of Interest: Education; Imaging Technique: RIS; Procedure: Education; Special Focus: Tissue characterisation;
     
     
Axial T1-weighted image (T1-WI) shows a space-occupying lesion of low signal intensity (SI) in the mastoid (asterisk).
 
Axial T2-weighted image (T2-WI) shows a space-occupying lesion of heterogeneous intermediate to high SI in the mastoid (asterisk).
 
Axial diffusion weighted image (DWI) shows no significant diffusion restriction (asterisk).
 
Axial apparent diffusion coefficient (ADC) map shows no significant diffusion restriction (asterisk)
 
On axial T1-WI after intravenous administration of gadolinium-based contrast medium, the lesion shows clear enhancement (asterisk), with exception of the anterior part, which does not enhance (arrow).
 
Axial cone-beam computed tomography confirms the destructive osteolytic space-occupying lesion in the left mastoid (asterisk), with erosion of the facial canal (arrow)
 
Axial cone-beam computed tomography confirms the destructive osteolytic space-occupying lesion in the left mastoid (asterisk), with erosion of the posterior wall of the external acoustic meatus (arrow).
 
Overview of all published cases of chondromyxoid fibroma (CMF) in the mastoid
 
 
 
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