Keywords: Balloon pulmonary angioplasty; Chronic thrombo-embolic pulmonary hypertension; Congenital heart disease; Connective tissue disease; Endothelin receptor antagonists; Guidelines; Left heart disease; Lung disease; Lung transplantation; Phosphodiesterase type 5 inhibitors; Prostacyclin analogues; Prostacyclin receptor agonists; Pulmonary arterial hypertension; Pulmonary endarterectomy; Pulmonary hypertension; Soluble guanylate cyclase stimulators.