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case_images: A 55-year-old female presented with dyspnoea and light chest pain during physical activity and palpitations. Coronary angiography and cardio-CT revealed a rare congenital anomaly: single dominant right coronary artery (RCA) with hypoplastic left coronary branch, which does not fit any of the types of the modified Lipton's classification.
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case_images: We performed a coronary angiography, which showed a single, large coronary artery arising from the right coronary sinus (Figures 1 and 2). This branch supplies most of the coronary circulation, including the left ventricle (Figure 1).
case_images: Dominant RCA bifurcates into PDA and posterolateral artery, traveling in the expected location of LCX.
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case_images: We performed a coronary angiography, which showed a single, large coronary artery arising from the right coronary sinus (Figures 1 and 2).
case_images: Large single coronary artery (SCA-R) shown in aortography with the absence of left main (LM).
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case_images: The anterior wall perfusion is provided by one small branch originating from the initial part of the RCA in the absence of the left main (Figure 3).
case_images: Hypoplastic left anterior descending artery (LAD) originating from the dominant right coronary artery (RCA).
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case_images: Approximately 2 mm from the ostium, this artery divides into two branches: a dominant RCA and a smaller branch responsible for the anterior wall perfusion (Figure 4).