Fig. 13
From: Persistent left superior vena cava: clinical importance and differential diagnoses
PLSVC with heterotaxy-2 (right and left isomerisms). a–d Axial (a, c, d) and coronal-oblique minimum intensity projection (b) CT images depict right isomerism characterized by a bilateral broad-based triangular atrial appendages (blue arrows) (a), bilateral trilobed lungs (red circles) (b), asplenia (c), and juxtaposition of IVC (blue circle) in a patient with PLSVC (not shown). e–i Axial (e, f, h, i) and coronal-oblique reformatted (g) CT images depict left isomerism characterized by a bilateral narrow-based finger-like atrial appendages (blue arrows) (e, f), bilateral bilobed lungs (red circles) (g), polysplenia (blue circle) (h), dilated azygos vein due to the IVC absence (yellow arrow) (h), and right aortic arch (RAA) in a patient with double SVC (green and red arrows) (i)