Venous thromboembolism (VTE) is common in the general population with an annual incidence of 10-18 cases per 10 000. The most severe form of VTE is represented by pulmonary embolism with a third of cases. Even if a large literature allows for high grade recommendations on many areas, there is still some gray areas regarding the long-term outcomes, the early evolution and tolerance of treatment, including long-term recurrence, the incidence of embolic sequelae with post-embolic pulmonary hypertension and association with other cardiovascular arterial accident (acute Coronary Syndrome, Stroke, arterial disease of the Lower Extremities ...).