PA film
Annotations of key anatomy:
CPA = Costophrenic angle
BS = Breast shadow
SDS = Subdiaphragmatic space
CP = Cardiophrenic angle
LV = Left ventricle
RA = Right atrium
H = Hilum
C = Carina
AK = Aortic knuckle
APW = Aortopulmonary window
PTL = Paratracheal line