Chronic thromboembolic pulmonary hypertension (CTEPH) is a form of pulmonary arterial hypertension (PAH) in which the pulmonary thrombus fails to resolve, resulting in occlusion and remodelling of pulmonary arteries.1 Timely diagnosis is critical since it is potentially curable by pulmonary thromboendarterectomy. Twenty five per cent of cases do not have a history of thromboembolic event. The diagnosis should be considered in the diagnostic work-up of PAH despite lack of history of episodes of thromboembolism. Here we are reporting a case of CTEPH with multiple systemic to pulmonary collaterals delineated by angiogram and CT.
- venous thromboembolism
- pulmonary hypertension
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