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Published on: December 19, 2020
[Nodular alveolar pattern of presentation for amiodarone pulmonary toxicity]
M C González Gordaliza1, A Vicente Bártulos, J A Sánchez Corral
1Servicio de Radiología, Hospital Universitario Ramón y Cajal, Crta de Colmenar Viejo km 9,10, 2834 Madrid, España. cggordaliza@mixmail.com
Abstract:
Amiodarone is a triiodinated antiarrhythmic drug that accumulates in alveolar macrophages. Its use is limited by its high rate of associated pulmonary toxicity, estimated at 5-7%. Radiologic findings for pulmonary toxicity caused by amiodarone are unspecific and varied. The most common finding is subpleural reticular-type interstitial thickening, predominately in the bases of the lungs. However, the presence of parenchymal nodules is an uncommon presentation. We report the case of a woman treated with amiodarone that presented multiple nodular lesions at plain-film radiography and high-resolution CT that were compatible with pulmonary toxicity caused by amiodarone at pathologic examination.
Insights
Amiodarone, an antiarrhythmic drug, can cause lung toxicity. This case highlights an uncommon presentation of amiodarone-induced pulmonary toxicity with multiple nodular lesions on imaging.
Area of Science:
- Pulmonology
- Radiology
- Pharmacology
Background:
- Amiodarone is a widely used antiarrhythmic medication.
- Pulmonary toxicity is a known adverse effect of amiodarone, occurring in 5-7% of patients.
- Radiologic findings of amiodarone-induced lung injury are typically non-specific.
Observation:
- This report details a case of a woman undergoing amiodarone treatment.
- The patient presented with multiple nodular lesions identified on plain-film radiography and high-resolution computed tomography (CT).
Findings:
- The observed nodular lesions were pathologically confirmed as amiodarone-induced pulmonary toxicity.
- This presentation is considered uncommon, as interstitial thickening is more frequently observed.
Implications:
- Recognizing diverse radiologic manifestations of amiodarone pulmonary toxicity is crucial for timely diagnosis.
- This case expands the understanding of imaging findings associated with amiodarone lung injury.
- Prompt identification and management can mitigate severe respiratory complications.
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