has part has part has_part characteristic of has modifier abnormal cardiac muscle tissue morphology cardiac muscle necrosis MPheno.ontology necrotic cardiac muscle If necrosis occurs in the heart or any subsection of the heart you should annotate use myocardium necrosis. Cardiac muscle necrosis should be used when the location of the cells is unknown or outside the heart. 2010-10-07T10:40:22Z morphological changes resulting from pathological death of cardiomyocytes or a portion of the cardiac muscle tissue; usually due to irreversible damage cardiomyocyte necrosis csmith MP:0010632 abnormal necrotic cardiac muscle tissue