Example of bileaflet mitral valve prolapse (A–D). Prolapse of the anterior and posterior mitral valve leaflets demonstrated in (A) a long-axis view of a 2-dimensional (2D) transthoracic echocardiogram (leaflets are displaced more than 2 mm beyond the annulus, shown as a dotted line), (B) a mid-esophageal 4-chamber view of a 2D transesophageal (TEE) echocardiogram, (C) a 3-dimensional (3D) TEE en face or surgical view (A1, A2, A3 and P1, P2, P3 are the lateral, middle, and medial anterior and posterior scallops, respectively), and (D) a cardiac magnetic resonance (CMR) steady state free processing (SSFP) long-axis view. AO = aorta; LA = left atrium; LV = left ventricle; RV = right ventricle; MAD = mitral-annular disjunction (separation between the left atrial wall at the level of mitral valve junction and the LV free wall).