A leading breast cancer surgeon has discovered how to detect the disease with rays of light. Mohammed Keshtgar can establish if cancer has spread into a patient's lymph glands within seconds using the pioneering procedure.

Currently women have to wait a week for results from a biopsy..........The technology allows surgeons to see whether cancer has spread while patients are still in the operating theatre. Light is shone on a sample of the sentinel lymph node, which is the first lymph node that cancer drains into.......................