Media playback is unsupported on your device

Breast cancer 'research gap' warning

1 October 2013 Last updated at 07:53 BST

Doctors and scientists say there is a major gap in understanding why breast tumours spread.

A study highlights 10 key areas where more needs to be done, including the development of tests to predict how patients will respond to chemotherapy.

Sophie Hutchinson reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.