accessory diaphragm

accessory diaphragm

a rare congenital anomaly in which a second diaphragm or portion of a diaphragm develops in the chest. It is usually found on the right side and is oriented upward and backward to the posterior chest wall. It may be separated from the true diaphragm by a lobe of a lung. It is often associated with cardiac anomalies.
References in periodicals archive ?
ASD, VSD, PDA, accessory diaphragm, and absent inferior vena cava can be other associated anomalies.
However, occurrence of accessory diaphragm and anomalies affecting the crura alone (duplication) are very rare.