This had a large flat abnormal posterolateral papillary muscle an abnormal insertion of the tendinous cords.
The defect is usually posterolateral and on the left, probably due to the earlier closure of the right pleuroperitoneal opening.
The posterolateral and posteromedial sides smoothly blend into each other, so that the shaft cross-section is semi-oval.
Surgical approach was sternotomy in 66%, right thoracotomy anterolateral in 19%, posterolateral in 15%.
Phyllolepids in which the nuchal plate has a rounded anterior margin, with lateral corners posteriorly placed, and posterolateral margins relatively short, concave and anterolaterally directed.
Eyes lobes globular, set midway between anterolateral and posterior furrow (exsag.), equidistant from axial furrow to posterolateral border furrow.
There was a second posterolateral orifice with a diameter of approximately 6 mm.
Additionally, a stenotic lesion of 90% was found in the posterolateral branch of the left circumflex artery.
