Nonclassic mitral valve prolapse (with fibroelastic deficiency) and classic mitral valve prolapse (Barlow disease)

(A and B) Nonclassic MVP (fibroelastic deficiency)

(A) Parasternal long-axis view demonstrating presence of a flail segment of the posterior leaflet (arrow).
(B) 3D TEE of the same patient shows focal involvement of the P2 scallop with evidence of ruptured chords (arrow).

(C and D) Classic MVP (Barlow disease)

(C) Apical long-axis view shows diffusely thickened anterior and posterior mitral leaflets (arrows).
(D) 3D TEE of the same patient shows massive prolapse of the P2 to P3 scallops.

MVP: mitral valve prolapse; 3D: 3-dimensional; TEE: transesophageal echocardiography.

Graphic 83595 Version 3.0