Key result
A rare atrial septal defect straddling the inferior vena cava orifice with anomalous right pulmonary vein connection was identified at necropsy, likely due to laevo-position of the sino-atrial orifice.
Case Report (n=1)
Describes a rare, previously unrecorded type of atrial septal defect involving the inferior vena cava and anomalous pulmonary venous return, likely due to laevo-position of the sino-atrial orifice.
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May warrant consideration in complex congenital cases; extends ASD anatomic spectrum and leaves open embryologic mechanisms.
McCormack et al. (1968) conducted a case report in Atrial septal defect (n=1). A rare atrial septal defect straddling the inferior vena cava orifice with anomalous right pulmonary vein connection was identified at necropsy, likely due to laevo-position of the sino-atrial orifice.
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