Pulmonary arteriovenous malformation in chronic thromboembol
Case Report
A 27-year-old male presented with dyspnea (grade II) and massive hemoptysis (three episodes, each of 200 ml over 24 h) requiring blood transfusion. He also gave a history of multiple episodes of hemoptysis (150–200 ml/day) in the preceding 2 weeks period. There was no history of cyanosis or epistaxis. Clinical examination showed no mucocutaneous lesions. Chest radiograph showed features consistent with pulmonary artery hypertension (PAH), including prominent pulmonary artery segment, dilated right descending pulmonary artery, and peripheral pruning. In addition, there was a well-defined opacity in the left lower lung zone. Echocardiography suggested moderate PAH with normal biventricular function.

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