CTICasesTakayasu Arteritis
[...]. Takayasu Arteritis. CTICases. Published March 24, 2017. https://str-case-explorer.pages.dev/c/eq74a
Imaging findings
Contrast-enhanced chest CT shows circumferential soft-tissue thickening surrounding the aortic wall, extending from the ascending aorta through the arch and descending thoracic aorta, as well as the major arch vessels. The pulmonary arteries display multiple abnormalities including long-segment stenosis of the right main pulmonary artery and multiple peripheral segmental occlusions. Markedly dilated, hypertrophied bronchial arteries are seen serving as systemic-to-pulmonary collaterals. There is a geographic mosaic attenuation pattern in the lung parenchyma and soft-tissue thickening around abdominal branches, including the left gastric artery and celiac axis.
Key takeaways
Takayasu arteritis is a large-vessel vasculitis that primarily affects the aorta and its main branches, but also involves the pulmonary arteries in up to 50% of cases. Pulmonary artery stenosis or occlusion can lead to chronic hypoperfusion mimicking chronic thromboembolic pulmonary hypertension, with characteristic hypertrophy of bronchial collaterals. Non-compliance with immunosuppressive therapy leads to progressive, widespread arterial damage and collateralization.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Post-Traumatic Aortic PseudoaneurysmAorta & Arteries
- Pericardial Anaplastic Large Cell LymphomaMasses
- Carney Triad with Extra-Adrenal Paraganglioma and Pulmonary ChondromasNeoplastic
- Recurrent Testicular Cancer with Mediastinal LymphadenopathyNeoplastic
- Double Aortic Arch with Atretic SegmentAorta & Arteries
- Right Aortic Arch with Aberrant Left Subclavian Artery and Kommerell's DiverticulumAorta & Arteries
- Right Aortic Arch with Mirror-Image Branching and Right-Sided Ligamentum ArteriosumAorta & Arteries
- Anomalous Right Coronary Artery from the Pulmonary Artery (ARCAPA) and Patent Ductus ArteriosumCoronary
See all cases from March 24, 2017 →
Related Aorta & Arteries cases
- Penetrating Atherosclerotic Aortic Ulcer with Intramural Hematoma
- Mycotic Aneurysm (Streptococcus pneumoniae Aortitis)
- Iatrogenic Brachiocephalic Artery to Innominate Vein Fistula
- Type A Aortic Dissection with False Lumen Thrombus
- Traumatic Aortic Pseudoaneurysm
- Aneurysm of an Aberrant Right Subclavian Artery