EURORAD ESR

Case 12754

Lipoma arborescens of the knee joint

Author(s)
Víctor Vázquez Sánchez, M. Luisa Nieto Morales, Daniel Eiroa Domínguez, Adán Bello Báez, Cristina Lorenzo Dorta, Arsenio Cavada Laza

Hunsc; Carretera del Rosario s/n
Santa Cruz De Tenerife, Spain;
Email:victor_becedillas@hotmail.com
 
Patient
male, 63 year(s)
 
 
  • Figure 1
    Plain radiography

    Anteroposterior radiography of left knee shows degenerative chronic changes.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: Digital radiography; Procedure: eLearning; Special Focus: Tissue characterisation;
     
     
  • Figure 2
    Lateral plain ragiography of the left knee

    Lateral plain radiography shows tissue density in the supra-patellar pouch and findings suggestive of Osgood-Schlatter disease. Coexistent degenerative changes are present.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: Digital radiography; Procedure: Education; eLearning; Special Focus: Tissue characterisation;
     
     
  • Figure 3
    Sagittal T1-weighted MR of left knee
     

    T1 - weighted sagittal image demonstrates a frond-like mass in suprapatelar pouch, with high signal intensity, similar to that of subcutaneous fat.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Localisation; Special Focus: Pathology;

    T1 - weighted sagittal image demonstrates a frond-like mass in suprapatelar pouch, with high signal intensity, similar to that of subcutaneous fat.

     
    Area of Interest: Education; Imaging Technique: MR; Procedure: Education; Special Focus: Tissue characterisation;
     
     
  • Figure 4
    Sagittal PD-weighted imaging of the left knee

    The lesion shows loss of signal in fat sat sequence.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: eLearning; Special Focus: Tissue characterisation;
     
     
  • Figure 5
    Coronal T2 gradient echo sequence of left knee

    Echo (GRE) T2 - weighted MR imaging shows no evidence of magnetic susceptibility effects from haemosiderin.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: eLearning; Special Focus: Tissue characterisation;
     
     
  • Figure 6
    Axial PD-weighted MR image

    High signal intensity fluid surrounding fatty nodules on axial PD-weighted MRI.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Education; Special Focus: Tissue characterisation;
     
     
Anteroposterior radiography of left knee shows degenerative chronic changes.
 
Lateral plain radiography shows tissue density in the supra-patellar pouch and findings suggestive of Osgood-Schlatter disease. Coexistent degenerative changes are present.
 
T1 - weighted sagittal image demonstrates a frond-like mass in suprapatelar pouch, with high signal intensity, similar to that of subcutaneous fat.
 
T1 - weighted sagittal image demonstrates a frond-like mass in suprapatelar pouch, with high signal intensity, similar to that of subcutaneous fat.
 
The lesion shows loss of signal in fat sat sequence.
 
Echo (GRE) T2 - weighted MR imaging shows no evidence of magnetic susceptibility effects from haemosiderin.
 
High signal intensity fluid surrounding fatty nodules on axial PD-weighted MRI.
 
 
 
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