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Fluorodeoxyglucose (FDG) uptake in pulmonary rheumatoid nodules
Pramod Gupta1, Fabio Ponzo, Elissa L Kramer
1Division of Nuclear Medicine, Department of Radiology, NYU Medical Center, New York, NY 10016, USA. gupta01@popmail.med.nyu.edu
Clinical Rheumatology
|May 24, 2005
Summary
Rheumatoid arthritis patients with pulmonary nodules can be evaluated using FDG-PET scans. This imaging technique helps confirm benign rheumatoid pulmonary nodules, avoiding invasive procedures.
Area of Science:
- Rheumatology
- Nuclear Medicine
- Pulmonary Medicine
Background:
- Rheumatoid arthritis (RA) is a chronic inflammatory disease.
- Pulmonary nodules can occur in patients with RA.
- Distinguishing benign rheumatoid nodules from malignancy is crucial.
Observation:
- A 60-year-old female with a 5-year history of RA presented with pulmonary nodules.
- Chest radiography and CT scans revealed the nodules.
- Positron emission tomography (PET) showed mild fluorodeoxyglucose (FDG) uptake in the nodules.
Findings:
- Mild FDG uptake on PET scans is characteristic of benign lesions.
- Histopathological correlation confirmed the benign nature of the nodules.
- FDG-PET serves as a noninvasive metabolic biopsy.
Implications:
- FDG-PET can help avoid unnecessary invasive tissue sampling in RA patients with pulmonary nodules.
- This approach reduces patient morbidity and healthcare costs.
- Early and accurate diagnosis of rheumatoid pulmonary nodules is facilitated.