has part has part characteristic of inheres in has modifier Abnormal heart morphology Cardiomegaly SNOMEDCT_US:8186001 Enlarged heart Increased size of the heart, clinically defined as an increased transverse diameter of the cardiac silhouette that is greater than or equal to 50% of the transverse diameter of the chest (increased cardiothoracic ratio) on a posterior-anterior projection of a chest radiograph or a computed tomography. UMLS:C0018800 Increased heart size HP:0001640 abnormal increased size heart