LAUSR

https://e-kcj.org A 47-year-old woman with a history of pre-eclampsia visited the emergency department after a sudden onset of chest pain while watching television. Electrocardiography revealed a pathologic ST-segment elevation at the precordial leads of V1 to V5. Vasospastic angina was initially suspected because sublingual nitroglycerin dramatically ameliorated her symptom and electrocardiographic abnormalities. However, coronary computed tomographic angiography (CTA) revealed a significant smooth segmental narrowing at the midportion of the left anterior descending artery (Figure 1A). Cross-sectional images revealed a crescentshaped lumen at the distal part of the stenotic segment (Figure 1B and 1C), which highly suggested extrinsic compression of the true arterial lumen by the false lumen. Coronary Korean Circ J. 2020 Feb;50(2):179-181 https://doi.org/10.4070/kcj.2019.0313 pISSN 1738-5520·eISSN 1738-5555