CTICasesLateral Costal Artery Anatomic Variant
▶ Watch on YouTube — age-restricted, cannot embed here
Imaging findings
CT imaging shows bilateral arteries arising from the internal mammary arteries that track laterally in the subcostal or extrapleural space.
Key takeaways
This anatomic variant is known as the lateral costal artery, occurring in approximately 15% to 30% of cases. Recognizing this vessel is clinically important because it can act as a source of coronary-subclavian steal syndrome in patients who have undergone bypass grafting with the left internal mammary artery (LIMA), and it can occasionally be utilized as a bypass graft itself.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Ruptured Aortic Intramural Hematoma with Extrapleural Hematoma and HemothoraxVascular
- Acute Myocardial Infarction with Left Ventricular ThrombusVascular
- Anomalous Coronary Arteries from the Right Coronary CuspCongenital
- Anomalous Right Coronary Artery from the Left Coronary Cusp with Intramural CourseCongenital
- Anomalous Left Main Coronary Artery from the Right Coronary Cusp with Retroaortic CourseCongenital
- Recurrent Post-Infarction Ventricular Septal DefectVascular
- Metastatic Chondrosarcoma with Left Atrial ExtensionNeoplastic
- Mounier-Kuhn SyndromeCongenital
See all cases from October 3, 2014 →
Related Congenital cases
- Coarctation of Aorta with Meandering Pulmonary Vein
- Aortic Atresia with Large Patent Ductus Arteriosus
- Neurofibromatosis with Lung Cysts and Paraseptal Emphysema
- Accessory Connections of Superior Pulmonary Veins
- Scimitar Vein Variant with Hypoplastic Right Lung and Possible Left Pulmonary Isomerism
- Neurofibromatosis with Ruptured Intercostal Artery Aneurysms