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Coronary anomalies: incidence and importance
G Cieslinski1, B Rapprich, G Kober
1Department of Cardiology University Hospital, Frankfurt/Main, Germany.
Insights
Coronary anomalies are rare (0.97%) but significant for cardiac procedures. Anomalous circumflex origin was the most common finding in this angiographic study.
Area of Science:
- Cardiology
- Radiology
- Anatomical Variations
Background:
- Coronary artery anomalies are often asymptomatic.
- Knowledge of these variations is crucial for invasive cardiac procedures like catheterization and bypass surgery.
Purpose of the Study:
- To analyze the prevalence and types of coronary anomalies and malformations.
- To assess the significance of these findings in a large patient cohort undergoing angiography.
Main Methods:
- Retrospective analysis of angiographic findings.
- Study included 4,016 patients over a 5-year period (1985-1989).
- Focused on identifying and categorizing coronary anomalies.
Main Results:
- Coronary anomalies were found in 39 patients (0.97%).
- Anomalous circumflex branch was the most frequent anomaly (26 cases).
- Other anomalies included single coronary artery and rare origins of major coronary arteries.
Conclusions:
- Coronary anomalies are uncommon but important incidental findings.
- Unexpected angiographic results may indicate an underlying coronary anomaly.
- Awareness of these variations aids in procedural planning and patient safety.
Abstract:
Most patients with coronary anomalies are asymptomatic. The knowledge of those variations could be important in regard to invasive catheter treatment or bypass surgery. In a retrospective study, the angiographic findings based on 4,016 patients (1985-1989) were analyzed concerning coronary anomalies and malformations. Of the patients studied, 39 (0.97%) had coronary anomalies, and in 26 of these patients it was an anomalous circumflex branch. In 14 cases, the circumflex branch arose from a separate origin in the left aortic sinus. In 11 patients the origin was from the proximal segment of the right coronary artery. A singular coronary artery was found in five patients, originating from the right aortic sinus in two patients and from the left aortic sinus in three patients. An origin of the left coronary artery from the pulmonary artery, a coronary fistula, or an origin of the left anterior descending coronary artery from the RCA could be found in only one patient. Unexpected findings during invasive procedures would suggest a possibly existing coronary anomaly, especially when main branches cannot be opacified by selective contrast medium injection.