Magnetic marker liquid could be used to show if breast cancer has spread

Nice endorses Magtrace to use with probe, which work in similar way to metal detector

Women with invasive breast cancer could be injected with a magnetic marker liquid to tell doctors if their disease has spread, according to a recommendation by the government's health advisers.

The substance, called Magtrace, has been shown to locate the presence of sentinel lymph nodes, which show if the cancer has progressed beyond the breast.