The following is not a recognized cause of a unilateral hypertransradiant hemithorax on a chest radiograph.. Agenesis of lung

The following is not a recognized cause of a unilateral hypertransradiant hemithorax on a chest radiograph:
A- Congenital lobar emphysema.
B- Agenesis of lung…
C- Poliomyelitis.
D- Patient rotation.
E- Pulmonary embolus.