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FDG accumulation in aortic walls.

Y Mochizuki1, H Fujii, S Yasuda

  • 1HIMEDIC Imaging Center at Lake Yamanaka, Japan.

Clinical Nuclear Medicine
|January 4, 2001
PubMed
Summary
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Positron emission tomography (PET) scans may show fluorodeoxyglucose (FDG) accumulation in the aortic wall of elderly individuals. This finding may represent normal physiological uptake, not necessarily active vasculitis.

Area of Science:

  • Nuclear Medicine
  • Radiology
  • Cardiovascular Imaging

Background:

  • Whole-body F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) is utilized for cancer screening.
  • FDG uptake in the aortic wall is typically associated with active vasculitis.
  • The case presents an incidental finding in a patient without symptoms of inflammatory or cardiovascular disease.

Observation:

  • A 65-year-old asymptomatic woman exhibited incidental FDG accumulation in her arterial walls, including the aorta, during a PET scan.
  • The patient had no prior history of inflammatory conditions or cardiovascular disease.
  • Follow-up over 22 months revealed no symptoms indicative of active vasculitis.

Findings:

  • Incidental FDG accumulation in the aortic wall can occur in asymptomatic elderly individuals.

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  • This finding may represent physiological uptake rather than pathological inflammation.
  • Distinguishing physiological FDG uptake from vasculitis requires careful clinical correlation.

    • Implications:

    • Re-evaluation of the significance of FDG uptake in the aorta during PET imaging is warranted.
    • Findings suggest potential for FDG accumulation in the aortic wall as a normal physiological process in aging.
    • This could impact the interpretation of PET scans, potentially reducing unnecessary investigations for vasculitis.