Large vessel vasculitis

Case submitted by Nazim Coskun

65-year-old female

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Selected slices showing increased F-18 FDG uptake throughout the walls of bilateral carotid arteries, brachiocephalic trunk, bilateral subclavian arteries, thoracic aorta, abdominal aorta, bilateral iliac arteries and bilateral femoral arteries (SUVmax: 7.2).

Case Notes

Recommended FDG PET interpretation criteria for large vessel vasculitis:

  • Grade 0: No vascular uptake (≤ mediastinum)
  • Grade 1: Vascular uptake < liver uptake
  • Grade 2: Vascular uptake = liver uptake, may be PET-positive
  • Grade 3: Vascular uptake > liver uptake, considered PET-positive
Updated on Sep 3, 2024