Late lumen enlargement and plaque regression after drug-coated balloon treatment for an isolated ostial lesion of a diagonal branch

摘要

A 55-year-old man was admitted with worsening effort angina for over 1 week. Hypertension was the only coronary risk factor in this patient, and resting electrocardiography and echocardiography findings, as well as cardiac enzyme levels were normal. Coronary angiography revealed ostial stenosis of the first diagonal branch (90% diameter narrowing) (Fig. 1A, Suppl. Video 1). The patient declined complex stent implantation but agreed to receive drug-coated balloon (DCB) treatment. Informed consent was obtained, and the patient underwent careful evaluation.