Fludarabine monophosphate is an effective drug for the treatment of lymphoid malignancies. Myelosuppression, opportunistic infections, and autoimmune hemolytic anemia are the most common side effects of fludarabine. Herein we report a 55-year-old female that presented with fever and dyspnea after completing her third cycle of FMD (fludarabine, mitoxantrone, and dexamethasone) chemotherapy for stage IV non-Hodgkin follicular lymphoma. Chest X-ray revealed bilateral pneumofibrotic changes and chest CT showed bilateral diffuse interstitial changes with fibrotic alterations. No evidence of infectious agents was noted. The patient had a reduced carbon monoxide transfer factor (45%). Her symptoms and radiographic findings resolved following treatment with prednisolone. The literature contains several cases of fludarabine-associated interstitial pulmonary toxicity that responded to steroid therapy. Fludarabine-induced pulmonary toxicity is reversible with cessation of the drug and administration of glucocorticosteroids.
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