Figure 5:
A 27-year-old male patient presented by dyspnea and hemoptysis. Blood pressure 110/70 mmHg and heart rate: 105 bpm. Low risk according to simplified pulmonary embolism severity index score. (a) The thrombus is seen within the right middle lobe pulmonary artery (circle) (b) The thrombus is seen extending to a sub-segmental level involving one branch of the right lower lobe pulmonary artery (arrow) (c) Right to left ventricular ratio <1. The calculated pulmonary artery obstruction index for this patient was 22.5% (low-risk group).