EURORAD ESR

Case 9492

Pigmented villonodular synovitis of the knee

Author(s)
Mintzopoulou P, Oikonomou A, Ververidis A, Prassopoulos P

Radiology Department, University Hospital of Alexandroupolis, Democritus University of Thrace
Email:pmintzopoulou@hotmail.com
 
Patient
female, 59 year(s)
 
 
  • Figure 1
    Plain film

    Plain films of the knee joint: sclerotic margins (blue arrow), bone sclerosis of the tibial condyles (red arrow), degenerative changes in the tibial intercondylar eminence (green arrow) (Fig. 1a), large suprapatellar...

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: Plain radiographic studies;
     
     
  • Figure 2
    MR

    Consecutive sagittal T2-WI images demonstrate joint effusion in the suprapatellar (blue arrow), popliteal (green arrow) and pregastrocnemius (red arrow) recess. Note the low signal intensity rim (arrowhead) with areas...

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR;
     
     
  • Figure 3
    MR

    Axial PD fat-suppressed images demonstrate joint effusion (blue arrow) surrounded by a low signal intensity rim (arrowhead) with areas of nodularity (red arrow).

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR;
     
     
  • Figure 4
    MR

    Consecutive T2* axial images demonstrate blooming artifact (red arrows) in the areas of nodularity, owing to haemosiderin deposition.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR;
     
     
  • Figure 5
    MR

    Sagittal T1-WI fat-suppressed images before and after intravenous gadolinium administration demonstate diffuse enhancement of the thickened synovium (blue arrows), as well as of villonodular synovial fronds (red...

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR;
     
     
  • Figure 6
    Ultrasound

    Ultrasound images demonstrate diffuse synovial thickening (blue arrow), thickened villonodular synovial fronds (red arrow) (Fig. a) and discrete synovial hypervascularity in Colour Doppler (Fig. b).

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: Ultrasound; Ultrasound-Colour Doppler;
     
     
  • Figure 7
    Musculoskeletal joint

    Photographs obtained during arthroscopic synovectomy show thickened villonodular fronds.

     
    Area of Interest: Musculoskeletal joint;
     
     
Plain films of the knee joint: sclerotic margins (blue arrow), bone sclerosis of the tibial condyles (red arrow), degenerative changes in the tibial intercondylar eminence (green arrow) (Fig. 1a), large suprapatellar swelling (x) (Fig. 1b).
 
Consecutive sagittal T2-WI images demonstrate joint effusion in the suprapatellar (blue arrow), popliteal (green arrow) and pregastrocnemius (red arrow) recess. Note the low signal intensity rim (arrowhead) with areas of nodularity (yellow arrow).
 
Axial PD fat-suppressed images demonstrate joint effusion (blue arrow) surrounded by a low signal intensity rim (arrowhead) with areas of nodularity (red arrow).
 
Consecutive T2* axial images demonstrate blooming artifact (red arrows) in the areas of nodularity, owing to haemosiderin deposition.
 
Sagittal T1-WI fat-suppressed images before and after intravenous gadolinium administration demonstate diffuse enhancement of the thickened synovium (blue arrows), as well as of villonodular synovial fronds (red arrows).
 
Ultrasound images demonstrate diffuse synovial thickening (blue arrow), thickened villonodular synovial fronds (red arrow) (Fig. a) and discrete synovial hypervascularity in Colour Doppler (Fig. b).
 
Photographs obtained during arthroscopic synovectomy show thickened villonodular fronds.
 
 
 
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