label: transverse pericardial sinus
label_lc: transverse pericardial sinus
description: "The passage between the venous and arterial mesocardia -i.e., between the aorta and pulmonary artery in front and the superior vena cava behind. Also, the sinus that forms in the pericardial cavity where the dorso-mesentary pericardium reside.[WP,unvetted]."