Antemortem diagnosis of acute massive pulmonary thromboembolism (PTE) with a large thromboembolus at the bifurcation of the pulmonary trunk (saddle thromboembolus) is difficult, as most patients either die or are too ill for any diagnostic imaging. We report a case of massive PTE where constrast enhanced computed tomographic (CECT) scan of chest detected a saddle thromboembolus and showed its resolution with anticoagulant treatment. In our case, the presenting feature was unusual massive PTE as there was no haemodynamic instability or hypoxaemia.