Truncus arteriosus with absent semilunar valve: Prenatal diagnosis and morphology

Abstract

Background Truncus arteriosus (TA) is a rare cyanotic congenital heart defect that involves septation failure of the heart's main arterial out ow tract. TA is usually accompanied by a single semilunar valve. Varying morphologies of the truncal valve have been reported; however, an absent semilunar valve (ASV) is rarely seen in TA.Case presentation We report the rst fetus with trisomy 13 prenatally diagnosed with TA accompanied by ASV in the rst trimester, and con rmed by anatomy. Conclusion Fetal echocardiography is essential for prenatal diagnosis of TA accompanied by ASV.

Prenatal screening and diagnosis of pulmonary artery anomalies

“… Table S1 Typical findings of congenital pulmonary artery anomalies, with illustrated examples of cases 2,3,31–42 (Figures 5–16)…”