Pulmonary
131pulmonary venoocclusive disease — an idiopathic form of primary pulmonary hypertension, usually seen in children or young adults, characterized by dyspnea and syncope, sometimes with intimal fibrosis, hemoptysis, paroxysmal nocturnal dyspnea, and orthopnea …
132pulmonary arteriovenous fistula — a congenital fistula between the pulmonary arterial and venous systems, allowing unoxygenated blood to enter the systemic circulation …