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Updated: May 23, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Diagnosis of variants of single right coronary trunk using 64 multidetector computed tomography
Ashley E Kempf1, Farhood Saremi
1Department of Radiological Sciences, UCI, Medical Center, Orange, CA.
Insights
Single coronary artery anomalies are rare but increasingly diagnosed with CT angiography. This report details two unique cases of a single right coronary trunk with varied left coronary artery courses.
Area of Science:
- Cardiology
- Medical Imaging
- Anatomical Variants
Background:
- Single coronary artery anomalies represent rare variations in coronary anatomy.
- Advances in coronary CT angiography (CCTA) have led to increased detection rates of these anomalies.
Purpose of the Study:
- To report two distinct cases of single right coronary trunk.
- To illustrate the varied anatomical pathways of the left coronary artery originating from a single right coronary trunk.
Main Methods:
- Case report review.
- Analysis of coronary CT angiography findings.
Main Results:
- Two patients presented with a single right coronary trunk.
- Case 1: Left coronary artery coursed anterior to the main pulmonary artery.
- Case 2: Left coronary artery coursed between the main pulmonary artery and ascending aorta, then within the interventricular septum.
Conclusions:
- Single coronary anomalies, particularly single right coronary trunk, require detailed anatomical description.
- Varied anatomical courses of the left coronary artery from a single right coronary trunk can occur.
- Accurate diagnosis via CCTA is crucial for understanding and managing these rare coronary variants.
Abstract:
Single coronary anomalies are one of the rarest variants of coronary anatomy. Widespread use of coronary CT angiography has made it possible to diagnose these variants with increasing incidence. We report two cases of single right coronary trunk with different anatomic course of the left coronary artery; one anterior to the main pulmonary artery and the second between the main pulmonary artery and ascending aorta and then coursing within the interventricular septum.
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