Fig. 3From: Pulmonary arterial enlargement predicts cardiopulmonary complications after pulmonary resection for lung cancer: a retrospective cohort studyA box-plot showing preoprerative and postoperative PA/A ratio. A box-plot shows the ratio between the diameters of the pulmonary artery and aorta (PA/A ratio) preoperatively and 3 months after surgery. The postoperative PA/A ratio was significantly higher than the preoperative ratio (P < 0.0001)Back to article page