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Pulmonary gallium-67 uptake in diffuse pulmonary calcinosis
1Division of Nuclear Radiology, Childrens Hospital Los Angeles, 4650 Sunset Boulevard, Los Angeles, CA 90027, USA.
Pediatric Radiology
|November 1, 1996
Summary
Diffuse pulmonary uptake of technetium-99m-labeled methylene diphosphonate and gallium-67 citrate in chronic renal failure indicates pulmonary calcinosis. Gallium-67 uptake may mimic opportunistic infections, requiring careful interpretation.
Area of Science:
- Nuclear medicine
- Radiopharmacology
- Renal medicine
Background:
- Chronic renal failure (CRF) is associated with various complications.
- Pulmonary abnormalities can occur in patients with CRF.
- Radionuclide imaging is used to diagnose various conditions.
Observation:
- Diffuse pulmonary uptake of technetium-99m-labeled methylene diphosphonate (99mTc-MDP) was observed.
- Diffuse pulmonary uptake of gallium-67 (67Ga) citrate was also noted in the same patient.
- The patient had a history of chronic renal failure.
Findings:
- The observed diffuse pulmonary uptake of both 99mTc-MDP and 67Ga citrate indicated the presence of pulmonary calcinosis.
- Pulmonary calcinosis involves the deposition of calcium in the lungs.
- The uptake of 67Ga citrate can be particularly misleading.
Implications:
- The findings highlight the importance of considering pulmonary calcinosis in patients with CRF presenting with diffuse pulmonary uptake on radionuclide imaging.
- Clinicians should be aware that 67Ga citrate uptake in the lungs of CRF patients may represent calcinosis rather than an opportunistic infection.
- This distinction is crucial for appropriate patient management and treatment decisions.