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Perfusion lung scan in tropical pulmonary eosinophilia
1Department of Chest Diseases Christian Medical College, Vellore.
The Indian Journal of Chest Diseases & Allied Sciences
|April 1, 1992
Summary
Tropical pulmonary eosinophilia (TPE) patients show lung perfusion defects on scans. Previous treatment with diethylcarbamazine may normalize lung perfusion scan results in chronic TPE cases.
Area of Science:
- Pulmonology
- Nuclear Medicine
- Infectious Diseases
Background:
- Tropical pulmonary eosinophilia (TPE) is a parasitic lung disease.
- Diagnostic imaging plays a crucial role in assessing TPE severity.
- The impact of prior treatment on lung perfusion in TPE requires further elucidation.
Purpose of the Study:
- To evaluate lung perfusion using I131-MAA scans in patients with TPE.
- To investigate the correlation between treatment history and lung perfusion abnormalities in TPE.
Main Methods:
- Perfusion lung scintigraphy was performed on 7 patients diagnosed with TPE.
- Macroaggregate of human serum albumin tagged with Iodine-131 (I131-MAA) was used for imaging.
- Patients were categorized based on treatment status (untreated vs. previously treated).
Main Results:
- Significant perfusion defects were observed in 3 untreated patients with TPE.
- Lung scans were normal in 4 patients with a history of chronic illness and prior diethylcarbamazine treatment.
- Findings suggest a potential normalization of lung perfusion following treatment.
Conclusions:
- Perfusion lung scans can reveal abnormalities in untreated TPE.
- Prior diethylcarbamazine treatment may lead to normal lung perfusion in chronic TPE.
- Further research into TPE pathophysiology and treatment response is warranted.