- SVC Obstruction: Facts
- Lung cancer is most common cause
- Collaterals are many and include azygous, hemiazygous, vertebral venous plexus, internal mammary veins, intercostal veins, lateral thoracic system
- Common etiologies are lung cancer, metastases (like breast cancer), lymphoma, fibrosing mediastinitis, radiation change
- Persistent Left SVC: Facts
- Represents persistence of the left common cardinal vein
- Usually drains into the coronary sinus
- Usually associated with absent left brachiocephalic vein
- Usually has SVC present as well
- Occurs in 0.2-0.4% of patients - “ Multidetector CT is an alternative tool helpful in establishing the primary diagnosis, defining anatomic landmarks and their relationships, and identifying associated cardiovascular anomalies. It is also an adjunct in the evaluation of complications during follow-up.”
Uncommon Congenital and Acquired Aortic Disease: Role of Multidetector CT Angiography
Kimura-Hayama ET, et al
RadioGraphics 2010; 30;79-98 - “ With its high spatial resolution and isotropic and volumetric information multidetector CT performed with or without ECG-gated technique allows accurate and fast noninvasive characterization of aortic pathologic conditions.”
Uncommon Congenital and Acquired Aortic Disease: Role of Multidetector CT Angiography
Kimura-Hayama ET, et al
RadioGraphics 2010; 30;79-98 - Patent Ductus Arteriosus: Facts
- Connects the proximal descending aorta, immediately distal to the origin of the left subclavian artery, with the proximal left pulmonary artery at the junction of the main pulmonary artery
- Closes functionally 18-24 hours after birth and anatomically at one month
- If it is patent after 3 months it is a PDA - Patent Ductus Arteriosus: Facts
- PDA occurs in 1 of 2,000 children born full term
- More common in woman (2-1)
- Treatment includes surgical closure or percutaneous placement of an occluder devise
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