Observational Study of Incidence of Breakthrough Cancer Pain and How it is Treated

Multicenter Observational Study of the Incidence and Treatment Modalities of Breakthrough Cancer Pain in Patients With Chronic Cancer Pain

The purpose of this study is to describe how often advanced cancer patients experience breakthrough pain (BTcP), and to describe how this pain is treated, and how effective these treatments are.

Inclusion Criteria:

• Diagnosis of neoplasm in advanced stage
• Chronic pain controlled for at least one week with opioids 60 mg / day morphine equivalent
• 1-6 episodes of BTcP within any of 3 days previous to registration into study
• Signed Informed Consent

Exclusion Criteria:

· More than 6 episodes of BTcP within any of 3 days previous to registration into study