EURORAD ESR

Case 13276

Intra-articular neurofibroma of the knee: an unusual location in Hoffa’s fat pad

Author(s)
Tilfine C, Azdad O, Omor Y, Sbihi L, Moatassim Billah N, Nasser I, Ajana A

Service de radiologie centrale
CHU Ibn Sina - Université Med V
Rabat, Morocco;
Email:charafmed@live.fr
 
Patient
female, 34 year(s)
 
 
  • Figure 1
    Radiograph of the right knee

    Lateral radiograph of the right knee reveals a density within Hoffa’s fat pad (arrow).

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Conventional radiography; Procedure: Perception image; Special Focus: Pathology;
     
     
  • Figure 2
    Ultrasonography of the right knee

    Ultrasonography of the right knee shows a hypoechoic mass within Hoffa’s fat pad (arrow).

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Ultrasound; Procedure: Perception image; Special Focus: Pathology;
     
     
  • Figure 3
    MRI of the knee

    MRI of the knee shows a nodular lesion of Hoffa’s fat pad (arrows) with an isosignal on T1-weighted (a) and moderate high signal on proton density fat suppressed images (b).

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Perception image; Special Focus: Pathology;
     
     
  • Figure 4
    MRI of the right knee

    MRI of the right knee shows bright enhancement on post-gadolinium injection of the lesion in Hoffa’s fat pad (arrow).

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Pathology;
     
     
  • Figure 5
    MRI of the right knee

    MRI of the knee reveals a cutaneous neurofibroma at the popliteal fossa (arrows) with an isosignal on T1-weighted (a), a moderate high signal on PDFS images (b), and a bright enhancement on post-injection (c).

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Perception image; Special Focus: Pathology;
     
     
Lateral radiograph of the right knee reveals a density within Hoffa’s fat pad (arrow).
 
Ultrasonography of the right knee shows a hypoechoic mass within Hoffa’s fat pad (arrow).
 
MRI of the knee shows a nodular lesion of Hoffa’s fat pad (arrows) with an isosignal on T1-weighted (a) and moderate high signal on proton density fat suppressed images (b).
 
MRI of the right knee shows bright enhancement on post-gadolinium injection of the lesion in Hoffa’s fat pad (arrow).
 
MRI of the knee reveals a cutaneous neurofibroma at the popliteal fossa (arrows) with an isosignal on T1-weighted (a), a moderate high signal on PDFS images (b), and a bright enhancement on post-injection (c).
 
 
 
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