abnormal mitral valve morphology abnormal mitral valve anulus morphology 2010-10-06T03:48:15Z MP:0010613 MPheno.ontology abnormal bicuspid valve anulus any structural anomaly of the fibrous ring of the mitral valve that attaches the cusps of mitral valve to the heart, and which consists of portions of the fibrous scallops of the anterior and posterior cusps csmith