Chronic thromboembolic pulmonary hypertension (CTEPH), classified as Group 4 in the World Symposium on Pulmonary Hypertension (WSPH) system, is a relatively uncommon form of pH that is characterized by persistent obstruction of the pulmonary vascular bed due to organized thrombus, neointima formation, and vascular webs[1,2]. Although there are a growing number of effective therapies for this condition (including surgical endarterectomy, endovascular methods, and pharmacologic agents), CTEPH rema…