CTICasesSinoatrial Nodal Artery Fistula to Left Atrium
Imaging findings
CT coronary angiography shows marked, tortuous dilation of the sinoatrial (SA) nodal branch arising from the right coronary artery, which is seen communicating directly with the left atrium, representing a coronary-cameral fistula.
Key takeaways
Coronary-cameral fistulas are vascular anomalies where coronary artery branches drain directly into a cardiac chamber. A fistula involving the SA nodal artery is rare, presenting as a tortuous, dilated atrial branch that can create a left-to-right shunt and trigger atrial arrhythmias.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Cryptococcus Pulmonary Nodule in CVIDInfection
- Traumatic Right Hemidiaphragm HerniaTrauma
- Bilateral Diaphragm Paralysis from Cervical Cord CompressionTrauma
- Spontaneous Herniation of Transverse ColonOther
- Type A Aortic Dissection with PA Adventitial HematomaVascular
- Disseminated Alternaria InfectionIatrogenic
- ABPA with Alternating Lobar CollapseInflammatory
- Atrioesophageal FistulaIatrogenic
See all cases from November 9, 2021 →