EURORAD ESR

Case 14915

Myositis ossificans of the thigh with CT, MRI, and US findings in a paediatric patient

Author(s)
Gonca Koc¹, Taylan Celik², Hulya Nalcacioglu², Aysenur Pac Kisaarslan², Ceylan Cura², Isin Sonmez², Yasemin Altuner Torun²

¹ Pediatric Radiology
² Pediatrics

Emel-Mehmet Tarman Children's Hospital,
Erkilet, 38170 Kayseri, Turkey;
Email:ggulkoc@gmail.com
 
Patient
female, 11 year(s)
 
 
  • Figure 1
    T2-weighted fat saturated axial MR image

    On T2-weighted fat saturated axial MR image, the myositis ossificans lesion is seen hyperintense compared to muscle. Note that the adjacent muscle is also hyperintense (asterix) compatible with strain.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Calcifications / Calculi;
     
     
  • Figure 2
    T1-weighted MR image

    Myositis ossificans is isointense compared to muscle on T1-weighted MR image.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Calcifications / Calculi;
     
     
  • Figure 3
    T1-weighted MR image

    Following gadolinium-based contrast medium administration, the lesion enhances vividly on coronal T1-weighted MR image.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Calcifications / Calculi;
     
     
  • Figure 4
    Sagittal fat-saturated T2-weighted image

    On sagittal fat -aturated T2-weighted image biceps femoris muscle is hyperintense (arrows) compatible with strain. Myositis ossificans lesion is located at posterior of thigh (asterisk).

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Calcifications / Calculi;
     
     
  • Figure 5
    Ultrasonography

    Ultrasonography obtained with linear transducer (10 MHz) reveals myositis ossificans as peripherally calcified solid mass lesion.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Calcifications / Calculi;
     
     
  • Figure 6
    Axial CT image

    On axial CT image, peripheral calcification of myositis ossificans is shown.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Calcifications / Calculi;
     
     
On T2-weighted fat saturated axial MR image, the myositis ossificans lesion is seen hyperintense compared to muscle. Note that the adjacent muscle is also hyperintense (asterix) compatible with strain.
 
Myositis ossificans is isointense compared to muscle on T1-weighted MR image.
 
Following gadolinium-based contrast medium administration, the lesion enhances vividly on coronal T1-weighted MR image.
 
On sagittal fat -aturated T2-weighted image biceps femoris muscle is hyperintense (arrows) compatible with strain. Myositis ossificans lesion is located at posterior of thigh (asterisk).
 
Ultrasonography obtained with linear transducer (10 MHz) reveals myositis ossificans as peripherally calcified solid mass lesion.
 
On axial CT image, peripheral calcification of myositis ossificans is shown.
 
 
 
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