• Yuhao Wu, Hongbo Lei, Yonggang Li, Zhou Fu, Guanghui Wei, and Chun Wu.
• Department of Cardiothoracic Surgery Children's Hospital of Chongqing Medical University, Chongqing, China; Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China.
• Chest. 2020 Aug 1; 158 (2): e59-e64.

Case PresentationAn 8-year-old boy was referred to our institution because of nausea and vomiting for 1 day. He had also been experiencing shortness of breath for more than 1 year. This symptom had progressed so that he could no longer run or walk upstairs without chest discomfort. There was no associated fever, diarrhea, or coughing. He had a history of heart murmur that was diagnosed in another clinic 4 years ago. Echocardiogram 4 years prior suggested mild to moderate biatrial enlargement with trivial mitral valve regurgitation. He did not go in for any follow-up until this admission. He had no other associated diseases, nor use of medicine.Copyright © 2020 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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