LAUSR

F IGURE 1 (A-E) MBPA without crossing of LPA and RPA. 3VT view. Sequential anterior to posterior sweep showing the most anterior DA (A) follow by LPA ostium (B) arising superior to RPA ostium (C) without crossing. (D) Three vessel view cartoon showing the LPA ostium (purple color) arising superior to RPA ostium (blue color) without crossing. (E) Sagittal view of branch pulmonary arteries showing the anterior most DA, followed by LPA ostium (purple color) arising superior to RPA ostium (blue color). AO, aorta; DA, ductus arteriosus; Desc.AO, descending aorta; LPA, left pulmonary artery; MPA, main pulmonary artery; RPA, right pulmonary artery; S, spine; SVCsuperior vena cava; T, Trachea [Colour figure can be viewed at wileyonlinelibrary.com] A 25-year-old primigravida was referred at 31-weeks 5 days of gestation for fetal echocardiography in view of difficulty in profiling the branch pulmonary arteries. Fetal echocardiography showed normal four chamber and outflow views. While performing the three vessel and tracheal view the left pulmonary artery (LPA) ostium arises directly superior to the right pulmonary artery (RPA) ostium and RPA ostium arises directly inferior to the LPA ostium confirming the diagnosis of malposition of branch pulmonary artery without crossing of LPA and RPA (Figure 1A-E; Movie 2). In the normal fetus both the branch pulmonary arteries ostium arise at the same Received: 18 May 2020 Revised: 29 June 2020 Accepted: 13 July 2020