A Rare Morphological Variant Accessory Posterolateral Cusp of Mitral Valve with Accessory Papillary Muscle in Left Ventricle in An Adult Cadaver in Middle East-A Case Report

Various cases of accessory leaflets of mitral valve or tissue around the opening have been reported in the past. In some cases they were the main etiological factor for sub aortic stenosis or regurgitation. Here we report a rare finding of accessory posterolateral cusp of mitral valve with accessory papillary muscle in left ventricle of an adult male cadaver. Such variation has not been reported earlier in our region. We noticed additional commissure (as deep as rest of the other two) with chordae tendonae attached from the tip of additional papillary muscle. Such Variations may cause regurgitation or may compress outflow tract causing stenosis which may require their immediate removal. Awareness of such variations on the part of the surgical team is extremely important before operating in cases of mitral valve prolapse or regurgitation, aortic or mitral stenosis and left ventricular outflow tract obstruction and various valvular repair and graft surgeries. Knowledge of these would help in proper designing and placement of valve prosthesis. [Chaudhary S. A Rare Morphological Variant Accessory Posterolateral Cusp of Mitral Valve with Accessory Papillary Muscle in Left Ventricle in An Adult Cadaver in Middle East-A Case Report. J Am Sci 2017;13(3):102-105]. ISSN 1545-1003 (print); ISSN 2375-7264 (online). http://www.jofamericanscience.org. 10. doi:10.7537/marsjas130317.10.