Fig. 3

CT imaging of pulmonary hypertension. (a) Saddle embolus (red arrows) that bridges across the pulmonary artery from the heart as it divides into right and left main pulmonary arteries with enlarged pulmonary artery (yellow arrow). (b) Myelofibrosis with severe pulmonary arterial hypertension (a mean pulmonary artery pressure of 49, pulmonary capillary wedge pressure of 9, pulmonary vascular resistance of 9.4) with CT angiogram revealing no pulmonary embolism but prominent enlarged main pulmonary artery with mosaic attenuation (yellow arrows, decreased lung perfusion; red arrow, increased lung perfusion) within lung parenchyma. (c) Ovarian cancer (status post five cycles of vinblastine, cisplatin, cyclophosphamide, bleomycin, doxorubicin, and etoposide) with hypoxic respiratory insufficiency, new bilateral infiltrates, and pulmonary hypertension on echocardiogram thought to be related to bleomycin toxicity. Oxygen was limited due to concern for bleomycin toxicity, and she was treated with high-dose steroids and empiric antimicrobial therapy. Definition of abbreviations: CT, computed tomography