Pulmonary artery pseudoaneurysms are an uncommon pulmonary pathology; but associated with high mortality. Untreated lesions can enlarge, rupture or lead to exsanguination and death. Pseudoaneurysms are either idiopathic or may be caused by tuberculosis, fungal infection, penetrating trauma, blunt trauma, bacterial endocarditis, catheterisation of either pulmonary artery or right heart.
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