Patients with cancer or hematological malignancy are susceptible to present acute complications linked to their disease or to their specific treatments (dyspnea, sepsis, coma, hemorrhagic syndrome). Emergency physicians are in first line when these complications arise and have to face with some complex situations in which informations about patient malignancy or prognosis may be lacking. Nowadays, there is very few epidemiological data published concerning how cancer patient use Emergency Departments (EDs) and cancer patient care delivery in the EDs.

Thus, an observational multicenter prospective cross-sectional study is conducted to study the prevalence of cancer patients admitted to French EDs, and to describe the different reasons for cancer patients to seek care in EDs with their prevalence and underscore those linked to cancer or treatment complication

Inclusion Criteria:

• adult patients (age >=18 years)
• with active malignancy or a history of cancer in remission within the last 5 years
• being attended in one of the 400 French emergency centers participating in the study during the 3-day study period

Exclusion Criteria:

• opposition to participate

Patients of 18 years or more with active malignancy or in remission for less than 5 years and being attended in one of the 400 French emergency centers participating in the study during 3 consecutive days will be enrolled