Department of Pulmonary Medicine, Islamic Azad University, Mashhad Branch,
Cardiologist, Razavi Hospital,
Department of Radiology, Islamic Azad University, Mashhad Branch, Mashhad, Iran.
Background: Pulmonary artery hypertension (PAH) is difficult to diagnose because of its nonspecific symptoms. Although echocardiography can reliably and rapidly recognize the presence of pulmonary hypertension, chest X ray (CXR) is