Cancer patients are at risk for both venous and arterial thrombotic events. Accumulating evidence suggests a link between cancer and arterial thrombosis events. The pathophysiology of arterial thrombosis in cancer is complex and multifactorial. The risk of arterial thrombosis in cancer patients relies on individual risk factors, on cancer-related hypercoagulability, on anticancer drugs and radiotherapy often via a common underlying mechanism of endothelial dysfunction. This review describes the mechanisms involved in the development of arterial thrombotic events and their clinical manifestations. Furthermore, it provides an overview on therapeutic agents associated with arterial thrombosis.Improvements in anti-cancer global strategy resulted into a better outcome of a large percentage of cancer patients many of which experience definitive cure or long-term survival. As a consequence, toxicities claim attention and physicians should also focus on the long-term management of druginduced side effects mainly related to the cardiovascular system. Cancer is a risk factor for both venous (VTEs) and arterial thrombotic (ATEs) events. The risk of VTEs in cancer patients is clearly defined with a roughly 7-fold increase compared to the general population (1).Arterial thrombotic events are increasingly reported in cancer patients both during active treatment and follow-up with various clinical manifestations. The appearance of ATEs is associated with a worse prognosis and a 3-fold increase in overall mortality risk and a probability of recurrent thromboembolism of 37% at six months (2, 3). According to National Cancer Institute's Common Toxicity Criteria, arterial thromboembolism adverse events in cancer patients are related to myocardial ischemia or infarction, cerebral infarction, cerebrovascular accident, cerebral ischemia, ischemic stroke, and peripheral or visceral arterial thrombotic events so highlighting the wide spectrum of possible clinical presentations (4).Tumor cells directly and indirectly induce a state of hypercoagulability through distinct molecular pathways. Platelet activation, increased synthesis of procoagulant factors and reduction of fibrinolytic activity are all triggers for ATEs. Moreover, local and systemic inflammatory stimuli can turn the endothelium into a pro-thrombotic surface. All these mechanisms could be amplified by anticancer drugs and radiotherapy.