* pulmonic stenosis/coarctation of aorta(infantile - ume

[ArchivalUser]

Hi,
can anybody explain me why....................
on chest x-ray shows poststenotic dilatation of pulmonary artery in pulmonic stenosis OR poststenotic dilatation of asending aorta in coartation of aorta (infantile form)

Thanks in advance.

[ArchivalUser]

please..........................