EURORAD ESR

Case 1251

Isolated involvement of the superior rectus muscle in idiopathic orbital myositis

Author(s)
G. Ege, H. Akman, H. Ege*
 
Patient
male, 56 year(s)
 
 
  • Figure 1
    Orbital ultrasound
     

    Ultrasound showed the enlarged superior rectus muscle in the sagittal plane.

     
    Area of Interest: unknown; Imaging Technique: Orbital ultrasound;

    Power Doppler ultrasound detected increased vascularity in the affected muscle.

     
    Area of Interest: unknown; Imaging Technique: Orbital ultrasound;
     
     
  • Figure 2
    Orbital CT examination
     

    Isolated superior rectus involvement was seen on coronal scan.

     
    Area of Interest: unknown; Imaging Technique: Orbital CT examination;

    On axial image, muscle enlargement was depicted.

     
    Area of Interest: unknown; Imaging Technique: Orbital CT examination;

    After contrast injection, homogeneous enhancement was detected.

     
    Area of Interest: unknown; Imaging Technique: Orbital CT examination;
     
     
  • Figure 3
    Orbital MR Imaging
     

    On T2-weighted with fat-saturation coronal image, the right superior rectus muscle had slightly hyperintense signals compared to the other extraocular muscles.

     
    Area of Interest: unknown; Imaging Technique: Orbital MR Imaging;

    On T1-weighted axial image, homogeneously enlarged superior rectus muscle was seen without involvement of orbital fatty tissue.

     
    Area of Interest: unknown; Imaging Technique: Orbital MR Imaging;

    On T1-weighted sagittal image, superior rectus involvement was seen longitudinally.

     
    Area of Interest: unknown; Imaging Technique: Orbital MR Imaging;

    Post-contrast T1-weighted with fat-saturation coronal scan showed enhancement of involved muscle.

     
    Area of Interest: unknown; Imaging Technique: Orbital MR Imaging;
     
     
Ultrasound showed the enlarged superior rectus muscle in the sagittal plane.
 
Power Doppler ultrasound detected increased vascularity in the affected muscle.
 
Isolated superior rectus involvement was seen on coronal scan.
 
On axial image, muscle enlargement was depicted.
 
After contrast injection, homogeneous enhancement was detected.
 
On T2-weighted with fat-saturation coronal image, the right superior rectus muscle had slightly hyperintense signals compared to the other extraocular muscles.
 
On T1-weighted axial image, homogeneously enlarged superior rectus muscle was seen without involvement of orbital fatty tissue.
 
On T1-weighted sagittal image, superior rectus involvement was seen longitudinally.
 
Post-contrast T1-weighted with fat-saturation coronal scan showed enhancement of involved muscle.
 
 
 
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