CTICasesIn-Situ Right Pulmonary Artery Thrombosis
[...]. In-Situ Right Pulmonary Artery Thrombosis. CTICases. Published June 16, 2017. https://cticases.com/c/karqg
Imaging findings
Serial chest radiographs and CT scans demonstrate progressive volume loss, severe bronchiectasis, and parenchymal destruction of the right lung due to severe, chronic tuberculosis. Over time, a large, expanding, non-occlusive filling defect develops within the right pulmonary artery, consistent with an in-situ thrombosis secondary to sluggish flow in the severely damaged lung.
Key takeaways
Similar to a pulmonary artery stump thrombosis after lobectomy or pneumonectomy, severe chronic inflammatory parenchymal diseases like tuberculosis can destroy the distal pulmonary vascular bed. The resulting stagnant, low-flow state in the main pulmonary artery branch predisposes the patient to in-situ thrombosis, which can progressively enlarge.
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