CTICasesPulmonary Arterial Hypertension with In-situ Thrombus
Imaging findings
CT chest shows a massively dilated main pulmonary artery and a non-obstructive, layering intimal thrombus in the lobar and segmental branches. No acute pulmonary emboli or systemic deep venous thrombosis source was present. Lung pathology post-transplant confirmed idiopathic pulmonary arterial hypertension.
Key takeaways
In patients with severe, long-standing pulmonary arterial hypertension (PAH), stagnant blood flow and endothelial dysfunction can lead to in-situ thrombosis in the dilated central and segmental pulmonary arteries. This can mimic chronic thromboembolic disease (CTEPH) and requires careful clinical differentiation.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Methyl Methacrylate EmbolismIatrogenic
- Pulmonary Histoplasmosis-Related BroncholithiasisInfection
- Rheumatoid Arthritis with Necrobiotic NodulesAutoimmune
- Pulmonary Alveolar ProteinosisOther
- Expiratory Collapse of Lower Lobe Cystic AirspacesILD
- Intra-aortic Balloon Pump MalpositionIatrogenic
- Bilateral Bronchogenic CystsCongenital
- Hemi-azygous Continuation of the IVCCongenital
See all cases from February 19, 2022 →