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Published on: May 15, 2019
Reversible pulmonary toxicity due to lenalidomide
Stephanie Coates1, Alan Barker, Stephen Spurgeon
1Division of Pulmonary and Critical Care Medicine, Oregon Health and Science University, Portland, OR 97239, USA. coates@ohsu.edu
Abstract:
Lenalidomide is a derivative of thalidomide and is FDA-approved for the treatment of myelodysplastic syndrome and, in combination with dexamethasone, for the treatment of relapsed multiple myeloma. Pulmonary toxicity with thalidomide is a recognized potential complication; however, there have only been two case reports in the literature of lenalidomide-associated pulmonary toxicity. In this case, we describe a patient who developed profound dyspnea, decreased exercisetolerance, and new ground-glass opacities with reticulation, consistent with a nonspecific interstitial pneumonia pattern. Clinical suspicion for pulmonary drug toxicity was high and lenalidomide was discontinued. Within 2 weeks of stopping lenalidomide, the patient had significant improvement in dyspnea and interstitial changes on CT were resolving. After 8 weeks, there was complete resolution of symptoms. Lenalidomide-induced pulmonary toxicity is significantly debilitating but, to date, it appears to be reversible with discontinuation of the medication.
Insights
Lenalidomide can cause serious lung toxicity, presenting as shortness of breath and interstitial pneumonia. This pulmonary toxicity appears reversible upon medication discontinuation, offering hope for affected patients.
Area of Science:
- Pulmonology
- Oncology
- Pharmacology
Background:
- Lenalidomide, a thalidomide derivative, is approved for myelodysplastic syndrome and multiple myeloma.
- Pulmonary toxicity is a known risk with thalidomide, but less documented with lenalidomide.
Observation:
- A patient presented with severe dyspnea and decreased exercise tolerance.
- Imaging revealed new ground-glass opacities and reticulation, indicative of nonspecific interstitial pneumonia.
Findings:
- High clinical suspicion for lenalidomide-induced pulmonary toxicity led to drug discontinuation.
- The patient experienced rapid symptom improvement within two weeks and complete resolution in eight weeks.
- Computed tomography scans showed resolving interstitial changes, confirming reversibility.
Implications:
- Lenalidomide-induced pulmonary toxicity, though debilitating, appears to be reversible.
- This case highlights the importance of monitoring for pulmonary complications in patients treated with lenalidomide.
- Early recognition and discontinuation of lenalidomide can lead to favorable patient outcomes.
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