Follow-up to "What is wrong with this picture?"

I thought this was pretty interesting CT scan...
This patient has congenital atresia of the R pulmonary artery with absent R pulmonary circulation (this was a CT-A so you can see some opacified vessels on the L but none on the R). He likely only has some systemic (bronchial) circulation on the R. He has no pulm HTN on ECHO (no surprise, people do survive pneumonectomies) but we counselled him strongly on smoking cessation...