“…Multidetector CTA with multiplanar and threedimensional reconstructions allows excellent anatomical depiction and detailed evaluation of the cardiac structures as well as other extracardiac thoracic findings. 3,4 In our case, the PAS was well demonstrated on CTA, and apart from the sling, a segmental pulmonary arterial branch to the right upper lobe was seen arising aberrantly from the left-side pulmonary artery, which is extremely uncommon and, to the best of our knowledge, has not been described previously in association with a…”