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Detection of malignant right coronary artery anomaly by multi-slice CT coronary angiography
M S Dirksen1, J J Bax, N A Blom
1Department of Radiology, C2-S, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands, M.S.Dirksen@lumc.nl
Insights
Coronary artery anomalies, a rare condition, pose a high risk for sudden cardiac death in young adults. Multi-slice CT coronary angiography effectively diagnosed a malignant anomalous right coronary artery in a challenging case.
Area of Science:
- Cardiology
- Medical Imaging
- Congenital Heart Disease
Background:
- Coronary artery anomalies (CAA) affect 0.3-0.8% of the population, increasing the risk of sudden cardiac death in young adults.
- Conventional diagnosis via coronary angiography offers limited spatial visualization.
- Alternative methods like MRI are restricted by contraindications such as pacemakers or claustrophobia.
Observation:
- A 15-year-old male presented with ventricular fibrillation and was resuscitated.
- Initial cardiac catheterization yielded inconclusive results.
- Pacemaker implantation precluded the use of Magnetic Resonance (MR) imaging.
Findings:
- Multi-slice CT coronary angiography successfully identified a malignant anomalous right coronary artery.
- This imaging modality provided clear visualization despite previous diagnostic limitations.
Implications:
- CT coronary angiography is a valuable tool for diagnosing coronary artery anomalies in complex cases.
- Accurate diagnosis of CAA is crucial for preventing sudden cardiac death in at-risk individuals.
- This case highlights the utility of CT in overcoming limitations of other imaging techniques.
Abstract:
Coronary artery anomalies occur in 0.3-0.8% of the population and infer a high risk for sudden cardiac death in young adults. Diagnosis is usually established during coronary angiography, which is hampered by poor spatial visualization. Magnetic resonance imaging is an alternative, but it is not feasible in the presence of metal objects or claustrophobia. In this report, a 15-year-old boy experienced ventricular fibrillation and was successfully resuscitated. Cardiac catheterization was inconclusive, and pacemaker implantation prohibited the use of MR imaging. Multi-slice CT coronary angiography revealed a malignant anomalous right coronary artery.