An Observational Study of Avastin (Bevacizumab) in Patients With Metastatic Cancer of the Colon or Rectum

This prospective observational study will evaluate the safety and efficacy of first-line Avastin (bevacizumab) in combination with standard chemotherapy in routine clinical practice in patients with metastatic cancer of the colon and/or rectum. Patients will be followed for the duration of their treatment and a 30-day follow-up after the last dose of study drug.