Fig. 2From: Crossed pulmonary arteries associated with single atrium in an adult: a case reportComputed tomography angiography. a, b Axial CT imaging revealed an enlarged single atrium (SA), and mild stenosis (arrow) in the RPA. c Axial CTA imaging showed a narrow ostial (arrow) by which the left inferior pulmonary vein entered into the left side of a common chamberBack to article page