Abbott Specimen 48
Specimen Card Nomenclature
Tricuspid atresia with defect of ventricular septum, patent foramen ovale and anomalous septum in right auricle
International Classification of Diseases
Tricuspid atresia
Atlas Illustration
None
Donor
Drs. Clark and Lambert (Panama)
Date
1923
Age
Unknown
Description
Front view shows the right atrium (R) and ventricle (V), with an anomalous membranous “septum” crossing the atrium (arrow). A thin blue rod below it passes through an atrial septal defect; a thicker blue rod on the right goes through a ventriculo-septal defect.
Comment
In most cases of tricuspid atresia, there is no or minimal communication between the right atrium and ventricle (which is often hypoplastic). In this case, the valve is absent rather than stenotic and the right ventricle appears normal. The origin of the atrial septum is unclear.
