Resolution of Organizing Pneumonia Secondary to Nitrofurantoin without Immunosuppression

Organizing pneumonia (OP) is an interstitial lung disease (ILD) that can be a primary process or secondary to a wide variety of medical conditions or medications, including nitrofurantoin. A prolonged course of corticosteroids is the mainstay of treatment for OP. We present a novel case of nitrofurantoin induced OP in an 82-year-old woman in which there was complete resolution clinical and radiographic findings following discontinuation of the drug and without the use of corticosteroids. This case highlights the potential role for watchful waiting when there is a clear modifiable trigger of OP in a stable patient in the outpatient setting