28 November 2019 : Case report
Acute Eosinophilic Pneumonia Presenting with an Elevated Procalcitonin Level: A Rare Laboratory Finding
Challenging differential diagnosis, Diagnostic / therapeutic accidents, Rare diseaseDermot J. Murphy1AE*, Riffat Sabir2AE, Krishna Adit Agarwal3EF, Fahad Alroumi4BE
Am J Case Rep 2019; 20:1765-1768
BACKGROUND: We present the case of a 33-year-old female who was transferred to a tertiary care hospital because of acute respiratory failure.
CASE REPORT: History, imaging, and laboratory testing (including an elevated procalcitonin level) were consistent with a diagnosis of bacterial pneumonia. However, despite broad spectrum intravenous antibiotics, her condition worsened. Shortly after transfer to our hospital, she required intubation and mechanical ventilation. Bronchoscopy with bronchoalveolar lavage (BAL) was performed and a diagnosis of acute eosinophilic pneumonia was made. After discontinuation of antibiotics and initiation of steroids she improved quickly.
CONCLUSIONS: Our case highlights the importance of considering alternative diagnoses in patients who appear to have bacterial lower respiratory tract infection, even in those with elevated procalcitonin levels.
Keywords: Pneumonia, Pulmonary Eosinophilia, Respiration, Artificial, Anti-Inflammatory Agents, biomarkers, Diagnosis, Differential, Prednisone, procalcitonin, Respiratory Insufficiency
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