Epidemiological, observational, non-interventional, multicentric study on patients diagnosed with cancer who develop a venous or arterial thromboembolic episode, symptomatic or incidental, within a month prior to cancer diagnosis or at anytime after such diagnosis

Inclusion Criteria:

• Over 18 years of age with a histologically confirmed diagnosis of malignant tumor.
• Venous or arterial thromboembolism episode, symptomatic or incidental, in the month prior or any time after the cancer diagnosis and in the three previous months to enrollment, confirmed with an imaging technique: Doppler echocardiography, computed tomography (CT) angiography, etc.
• Signing of informed consent.

Exclusion Criteria:

• Clinical diagnosis of thromboembolic event without radiological confirmation.
• Presenting a single episode of superficial thrombophlebitis without association with another thromboembolic event.
• Each patient will be recorded just once, and therefore a second thromboembolic event will be considered a rethrombosis and will be recorded as such. Patients with a rethrombosis and a previous thromboembolic event before the start of the study in each center will not be able to be included.

Cancer patients