Pulmonary Veno-Occlusive Disease

**Definition:** Pathological process resulting in the fibrous obstruction of the small- and medium-sized PULMONARY VEINS and PULMONARY HYPERTENSION. Veno-occlusion can arise from fibrous proliferation of the VASCULAR INTIMA and VASCULAR MEDIA; THROMBOSIS; or a combination of both.

**Tree numbers:** - C08.381.780 - C14.907.690

**Synonyms:** - Pulmonary Veno Occlusive Disease - Veno-Occlusive Disease, Pulmonary - Pulmonary Venoocclusive Disease