CTICasesSpontaneous Auto-Embolization of a Pulmonary Arteriovenous Malformation (AVM)
▶ Watch on YouTube — age-restricted, cannot embed here
Imaging findings
A patient undergoing surveillance for treated small cell lung cancer presented with a large pulmonary AVM, including an arterial feeder and venous side. Subsequent CT revealed clot predominantly within the arterial feeder of the AVM and a small amount of clot in another right lower lung vessel, consistent with pulmonary embolism. A follow-up CT demonstrated significant regression of the AVM, suggesting auto-embolization.
Key takeaways
Pulmonary embolism can lead to spontaneous auto-embolization and thrombosis of pulmonary arteriovenous malformations (AVMs), resulting in their regression or 'auto-ileectomy.' While AVMs pose a risk for paradoxical embolism (e.g., stroke), in this case, the PE led to beneficial occlusion of the AVM itself.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Pulmonary Tumor Thrombotic Microangiopathy in Prostate CancerNeoplastic
- Pulmonary Tumor Thrombotic Microangiopathy in Metastatic Breast CancerNeoplastic
- Iatrogenic Diaphragmatic Herniation of Mesenteric FatIatrogenic
- Metastatic Renal Cell Carcinoma Presenting as Large Pleural Effusion and Pleural MetastasesNeoplastic
- Coronary Artery Aneurysms and Occlusion in Eosinophilic Granulomatosis with Polyangiitis (EGPA) VariantAutoimmune
- Microvascular Plug (MVP) Embolization of Pulmonary Arteriovenous Malformations (AVMs)Iatrogenic
- Type A Aortic Dissection with Acute Bilateral Lower Extremity Paralysis and Retroperitoneal HematomaVascular
- Sclerotic Bone Metastases from Breast Cancer Mimicking Pulmonary NodulesNeoplastic
See all cases from October 4, 2015 →
Related Vascular cases
- Mycotic Aneurysm (from Enterococcus Faecalis Endocarditis)
- Left Ventricular Pseudoaneurysm
- Chronic Type B Aortic Dissection with False Lumen Aneurysm
- Denver Shunt-Associated Fibrin Sheath and Right Atrial Thrombosis
- Extensive Pulmonary Embolism with Cavitating Infarction
- Transpleural Systemic-to-Pulmonary Venous Collateral in Central Venous Obstruction