Figure 7. Follow up CECT thorax axial view showing marked dilatation of main pulmonary (the ratio of ascending aorta and main pulmonary artery is reversed)

From

Isolated Protein S Deficiency Presenting as Thromboembolic Pulmonary Arterial Hypertension in a Young Child

Krishna Kumar Yadav, S N Singh, Anit Parihar

American Journal of Medical Case Reports. 2014, 2(12), 283-287 doi:10.12691/ajmcr-2-12-7