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[Single right coronary artery with absence of the left coronary ostium]
M Stellwaag1, S Bräuninger, T Menzel
1Fachbereich Kardiologie, Deutsche Klinik für Diagnostik, Wiesbaden.
Insights
A rare congenital anomaly, a single right coronary artery without a left coronary ostium, was found in a 31-year-old man. Angiography revealed the right coronary artery followed the left anterior descending artery
Area of Science:
- Cardiology
- Congenital Anomalies
- Anatomical Variations
Background:
- Congenital anomalies of the coronary arteries are rare but can have significant clinical implications.
- Understanding coronary artery anatomy is crucial for diagnosing and managing cardiovascular diseases.
Observation:
- A 31-year-old male presented with a rare congenital anomaly: a singular right coronary artery (RCA) with absence of the left coronary ostium.
- Coronary angiography revealed the RCA originating from the right Sinus of Valsalva, following a typical course initially, then continuing in reverse along the path of the left anterior descending artery (LAD).
Findings:
- The anomalous vessel had a proximal diameter of 5.2 mm.
- Thallium scintigraphy indicated no myocardial ischemia in the anterior wall.
- No increased risk for localized atherosclerosis was identified due to the absence of additional bifurcations or vessel kinking.
Implications:
- This case highlights the importance of detailed coronary angiography in identifying rare anatomical variations.
- The findings suggest that certain coronary artery anomalies may not predispose individuals to accelerated atherosclerosis.
- Further research into the long-term cardiovascular outcomes of such anomalies is warranted.
Abstract:
We report the rare congenital anomaly of a singular right coronary artery in absence of the left coronary ostium. In a 31-years-old man, coronary arterial angiography demonstrated a right coronary artery which, arising from the right Sinus Valsalvae, first described the normal right coronary arterial course but in the apical region continued to follow, in reverse direction, the normal course of the left anterior descending artery. The proximal diameter of the vessel measured 5.2 mm. Thallium scintigraphy showed no ischemia of the anterior wall. The risk of developing circumscribed atherosclerosis due to anatomical reasons seems not to be increased, as no additional bifurcation nor kinking was to be found.