<sod >'Every day women with certain types of breast cancer face the terrible dilemma of whether or not to have the treatment, without hard facts about the benefit for them. 'Side effects, such as hair loss, severe pain and infertility, can be utterly devastating and linger long after they walk out the hospital doors.' Chemotherapy typically costs PS4,500 per patient, so the findings could save the health service millions of pounds.< eod>< sod > 'Every day women with certain types of breast cancer face the terrible dilemma of whether or not to have the treatment, without hard facts about the benefit for them. 'Side effects, such as hair loss, severe pain and infertility, can be utterly devastating and linger long after they walk out the hospital doors.' The results were presented during the plenary sessions at the American Society of Clinical Oncology conference in Chicago, which is for research with the most potential to change patient care.< eod>