abnormal susceptibility to aortic cartilaginous metaplasia increased susceptibility to aortic cartilaginous metaplasia 2014-04-28T00:00:00Z nvasilevsky MP:0020094 increased susceptibility to the transformation of cells comprising the aorta epithelium to arterial chondrocytes that express type II collagen, resulting in heterotopic formation of cartilage and may lead to calcification in the aorta MPheno.ontology