CTICasesPulmonary Siderosis in a Welder
Imaging findings
CT in a patient staging for melanoma shows dense, non-calcified hilar and mediastinal lymph nodes without lung nodules, in a patient with a 20-year occupational history of welding.
Key takeaways
Pulmonary siderosis is a benign pneumoconiosis caused by the inhalation of iron oxide particles. Iron accumulates in alveolar macrophages and lymphatics, presenting as dense, non-calcified lymphadenopathy on CT without significant fibrosis.
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