EURORAD ESR

Case 10100

Intramuscular myxoma: US and MRI radiological findings

Author(s)
Bueno Palomino A, Benito Ysamat A, Montero Pérez-Barquero R.

Hospital Universitario Reina Sofía,
Radiología;
Avenida Menéndez Pidal s/n
Cordoba, Spain;
Email:antoniogueno@hotmail.com
 
Patient
female, 67 year(s)
 
 
  • Figure 1
    Ultrasound
     

    Solid lesion located in the inner right thigh, with oval morphology and well defined contours, showing a heterogeneous echogenicity with hypoechoic areas within it suggestive of necrosis or cystic degeneration.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    Solid lesion located in the inner right thigh, with oval morphology and well defined contours, showing a heterogeneous echogenicity with hypoechoic areas within it suggestive of necrosis or cystic degeneration.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    The tumour shows a minimal vascularisation in colour Doppler study.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    The tumour shows minimal vascularisation in colour Doppler study.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 2
    MRI T1-weighted sequences
     

    Intramuscular lesion located in right vastus medialis, with oval morphology and well defined contours, showing low signal intensity on T1-weighted sequences.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    Intramuscular lesion located in right vastus medialis, with oval morphology and well defined contours, showing low signal intensity on T1-weighted sequences.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    Intramuscular lesion located in right vastus medialis, with oval morphology and well defined contours, showing low signal intensity on T1-weighted sequences.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 3
    MRI T2-weighted sequences
     

    The tumour shows a high signal intensity on T2-weighted sequences and thin septa on the inside.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    The tumour shows a high signal intensity on T2-weighted sequences and thin septa on the inside.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 4
    MRI STIR-weighted sequences
     

    Fat component was not observed within the lesion but shows a slight peritumoral oedema.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    Fat component was not observed within the lesion but shows a slight peritumoral oedema.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    Fat component was not observed within the lesion but shows a slight peritumoral oedema.

     
    Area of Interest: Musculoskeletal bone; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 5
    MRI T1-weighted sequences after paramagnetic contrast administration
     

    The tumour shows a minimum internal enhancement after paramagnetic contrast administration. Destruction of adjacent bone or spread to other muscle groups were not observed.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    The tumour shows a minimum internal enhancementafter paramagnetic contrast administration. Destruction of adjacent bone or spread to other muscle groups were not observed.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;

    The tumour shows a minimum internal enhancementafter paramagnetic contrast administration. Destruction of adjacent bone or spread to other muscle groups were not observed.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
Solid lesion located in the inner right thigh, with oval morphology and well defined contours, showing a heterogeneous echogenicity with hypoechoic areas within it suggestive of necrosis or cystic degeneration.
 
Solid lesion located in the inner right thigh, with oval morphology and well defined contours, showing a heterogeneous echogenicity with hypoechoic areas within it suggestive of necrosis or cystic degeneration.
 
The tumour shows a minimal vascularisation in colour Doppler study.
 
The tumour shows minimal vascularisation in colour Doppler study.
 
Intramuscular lesion located in right vastus medialis, with oval morphology and well defined contours, showing low signal intensity on T1-weighted sequences.
 
Intramuscular lesion located in right vastus medialis, with oval morphology and well defined contours, showing low signal intensity on T1-weighted sequences.
 
Intramuscular lesion located in right vastus medialis, with oval morphology and well defined contours, showing low signal intensity on T1-weighted sequences.
 
The tumour shows a high signal intensity on T2-weighted sequences and thin septa on the inside.
 
The tumour shows a high signal intensity on T2-weighted sequences and thin septa on the inside.
 
Fat component was not observed within the lesion but shows a slight peritumoral oedema.
 
Fat component was not observed within the lesion but shows a slight peritumoral oedema.
 
Fat component was not observed within the lesion but shows a slight peritumoral oedema.
 
The tumour shows a minimum internal enhancement after paramagnetic contrast administration. Destruction of adjacent bone or spread to other muscle groups were not observed.
 
The tumour shows a minimum internal enhancementafter paramagnetic contrast administration. Destruction of adjacent bone or spread to other muscle groups were not observed.
 
The tumour shows a minimum internal enhancementafter paramagnetic contrast administration. Destruction of adjacent bone or spread to other muscle groups were not observed.
 
 
 
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