[Chemotherapy for colorectal cancer: Pragmatic assessment of prescription changes and relative dose intensity].

Introduction: Chemotherapy induced toxicities can generate changes in prescribing and relative dose intensity which have an impact on therapeutic efficacy.

Method: This is a prospective observational study performed in hepato-gastroenterology department for 6 months. All patients treated for colorectal cancer and beginning a protocol with at least one parenteral drug have been included.