WHO Group 4 - chronic thromboembolic pulmonary hypertension. (A) Twelve-lead electrocardiogram showing S1Q3T3 suggestive of right ventricular strain, and right axis deviation. (B, C) Chest X-ray: Massively enlarged central pulmonary arteries. (D-E) Ventilation perfusion scan revealing perfusion defect in left lower lobe (F-H) Computed tomographic pulmonary angiogram demonstrating massively dilated main pulmonary artery, eccentric mural thrombus in the right main pulmonary artery and its proximal branches (dashed white arrow).
Additional keywords: angiogram,electrocardiogram,X-ray,imaging,group 4