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Updated: Feb 7, 2026
Experimental Model to Evaluate Resolution of Pneumonia
Published on: February 17, 2023
A case of pulmonary siderosis misdiagnosed as pneumonia
Su-Jin Oh1, Ki-Eun Hwang1, Eun-Taik Jeong1
1Department of Internal Medicine, Institute of Wonkwang Medical Science, Wonkwang University, School of Medicine, Iksan, Jeonbuk, South Korea.
Abstract:
We report first case of pulmonary siderosis appearing as a consolidation upon radiological examination and being misdiagnosed as pneumonia. A 59-year-old man visited our hospital with a cough and sputum that had persisted for more than a month. He had undergone chest computed tomography (CT) after abnormal findings on chest X-ray at other hospitals. Based on the chest CT results, he was diagnosed with pneumonia. He was then administered antibiotics for 3 weeks, but there was no improvement. We identified the patient's occupational history first, and then performed bronchoalveolar lavage and chest CT-guided transthoracic lung biopsy. The obtained specimen showed alveolar, macrophage-containing, Prussian blue-positive iron particles. Based on the results, we diagnose/d the patient with pulmonary siderosis. We advised him to discontinue his job. He is currently undergoing observation, and has not shown any special symptoms.
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