EURORAD ESR

Case 8956

PET/CT features of bone harvesting site- avoiding a false positive interpretation in a case of medullary thyroid carcinoma.

Author(s)
Menon NJ, Scarsbrook AF, Chowdhury FU
 
Patient
male, 61 year(s)
 
 
  • Figure 1
    Whole body planar images from Technetium-99 MDP bone scintigraphy.

    There is a solitary focus of avid tracer uptake suggestive of an osseous metastasis.

     
    Area of Interest: Bones; Nuclear medicine;
     
     
  • Figure 2
    Saggital T2w & T1w images of lumbar spine MRI.

    Abnormal and infiltrative signal intensity in the L3 spinous process (arrows) consistent with a malignant process. Disease relapse was confirmed at surgery.

     
    Area of Interest: Musculoskeletal spine; Imaging Technique: MR;
     
     
  • Figure 3
    FDG-PET/CT study 3 months later with elevation of tumour markers.

    Unenhanced CT image shows large osteolytic lesion in right iliac wing (arrow), demonstrating mild FGD uptake on the PET and fused PET/CT image. The well defined margins suggest a surgical rather than pathological...

     
    Area of Interest: Bones; Imaging Technique: PET-CT;
     
     
  • Figure 4
    T1w gadolinium-enhanced (a), and diffusion weighted (b) MR liver.

    Solitary lesion in subcapsular segment 7, showing mild peripheral enhancement (a), and restrictive diffusion (b), consistent with an hepatic metastasis- the cause of the raised tumour markers.

     
    Area of Interest: Liver; Imaging Technique: MR;
     
     
There is a solitary focus of avid tracer uptake suggestive of an osseous metastasis.
 
Abnormal and infiltrative signal intensity in the L3 spinous process (arrows) consistent with a malignant process. Disease relapse was confirmed at surgery.
 
Unenhanced CT image shows large osteolytic lesion in right iliac wing (arrow), demonstrating mild FGD uptake on the PET and fused PET/CT image. The well defined margins suggest a surgical rather than pathological process.
 
Solitary lesion in subcapsular segment 7, showing mild peripheral enhancement (a), and restrictive diffusion (b), consistent with an hepatic metastasis- the cause of the raised tumour markers.
 
 
 
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