title: Truncus arteriosus communis: truncal valve anomalies associated with small conal or truncal septal defects.
abstract: Selected specimens of truncus arteriosus communis illustrate a spectrum of anomalous truncoconal septation in which the conal and truncal septal defects are so closely approximated to the truncal valve that portions of the valve tissue extend along the free margins of the adjacent ventricular or truncal septum.
mesh_terms: D006343:Heart Septal Defects / Q000150:complications / Q000473:pathology*; D006801:Humans