Bilateral Pleural Effusion in Cryptogenic Organizing Pneumonia: A Case Report and Review of Atypical Presentations

TL;DR

This case report highlights a rare presentation of cryptogenic organizing pneumonia with bilateral pleural effusion and emphasizes the need for accurate diagnosis to avoid mismanagement.

Contribution

The paper presents an atypical case of COP with bilateral pleural effusion and emphasizes the importance of considering COP in non-resolving pneumonia.

Findings

The patient showed no improvement with antibiotics but responded well to corticosteroid therapy.

Diagnostic bronchoscopy confirmed organizing pneumonia after excluding other secondary causes.

Bilateral pleural effusion is a rare but important radiographic feature in COP.

Abstract

Cryptogenic organizing pneumonia (COP) is a rare form of idiopathic interstitial lung disease that often presents with non-specific respiratory symptoms and radiographic findings that mimic infectious pneumonia. Due to these overlapping clinical features, COP is frequently misdiagnosed, leading to delays in appropriate management.

We report the case of a 23-year-old female patient who presented with dyspnea, productive cough, and fever. Despite receiving broad-spectrum antimicrobial therapy, there was no clinical or radiographic improvement. Imaging revealed bilateral pulmonary opacities and pleural effusions, and diagnostic bronchoscopy with transbronchial biopsy confirmed organizing pneumonia. Secondary causes, including infections, autoimmune diseases, and malignancy, were excluded. The patient started on oral prednisolone, resulting in significant improvement in both symptoms and radiological findings.

This case underscores the importance of considering COP in patients with non-resolving pneumonia, particularly when there is no response to adequate antibiotic therapy. A combination of radiological assessment, histopathological confirmation, and exclusion of secondary causes is essential for accurate diagnosis. Clinicians should maintain a high index of suspicion for COP in such scenarios, as timely diagnosis and initiation of corticosteroid therapy are critical for symptom resolution and prevention of disease progression.

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