CTICasesBreast Radiation-Associated Organizing Pneumonia
Imaging findings
Chest radiograph and CT show bilateral patchy ground-glass and airspace consolidations. The patient had undergone whole breast radiation therapy for breast cancer six months prior, and the consolidations are located outside of the radiation field, resolving rapidly with steroids.
Key takeaways
Radiation-associated organizing pneumonia is a rare, enigmatic syndrome that occurs within 12 months after breast radiation. Unlike radiation pneumonitis, the inflammatory process is migratory, occurs outside the treatment portal, and can even be bilateral, carrying a good prognosis and responding well to steroids.
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