Cryptogenic Organizing Pneumonia: A Case Report.

Cryptogenic organizing pneumonia (COP) is an idiopathic interstitial lung disease affecting the distal airways, characterized by the development of granulation tissue that obstructs the bronchioles and alveoli, leading to respiratory failure. This case report describes a 63-year-old female patient with a history of diabetes, hypertension, and hypothyroidism who presented with persistent productive cough and dyspnea, initially treated as community-acquired pneumonia. Despite empirical antibiotic therapy, the patient's symptoms persisted. Further investigation, including high-resolution CT (HRCT) scans and a CT-guided lung biopsy, revealed fibrotic exudates, interstitial fibrosis with inflammatory infiltrates, and epithelioid granuloma. A diagnosis of COP was made after multidisciplinary discussion, and corticosteroid therapy was initiated, leading to significant clinical improvement and resolution on repeat imaging. This case highlights the importance of considering COP in patients with nonresolving pneumonia and underlines the efficacy of corticosteroids in its management. It also emphasizes the need for a multidisciplinary approach combining clinical, radiological, and histological assessments to reach a definitive diagnosis. Early recognition and appropriate treatment are crucial in preventing complications such as fibrosis and respiratory failure.