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Radiofrequency catheter ablation (RFCA) procedure is performed for many tachyarrhythmias. We performed successful RFCA in a 5-year-old child for supraventricular tachyarrhythmia and Wolff-Parkinson-White syndrome. Acute circumflex artery (CxA) occlusion occurred due to RFCA. After percutaneous balloon angioplasty was performed into the CxA, the patient was treated with systemic steroid to resolve myocardial edema. To the best of our knowledge, systemic steroid was used first time for acute coronary artery injury related myocardial ischemia.

Percutaneous balloon angioplasty is an alternative therapy for the treatment of the typical type of coarctation. Its associated morbidity and mortality compares favorably when compared to the standard treatment surgery. While atypical coarctations are rare, the described cases have been treated surgically. We present a case of unusually located aortic coarctation successfully treated with percutaneous balloon angioplasty.