This echo is of a 23-year-old woman who was found to have a soft systolic murmur on auscultation. She has no symptoms and her ECG is normal. Her echo is shown in Fig 3.1, 3.2, 3.3 and 3.4, and Videos 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10 and 3.11.