This is a prospective, open-label, randomized phase III study. Patients will be stratified as per investigational site, previous adjuvant chemotherapy (anthracyclines versus anthracyclines plus taxanes), and number of affected axillary lymph nodes (0, 1-3, >= 4). Node negative patients must present a tumour size > 2 cm to be eligible. At least 6 lymph nodes must be analysed to confirm the number of affected nodes. Patients will be randomised to receive: 8 courses of capecitabine 1000 mg/m2 by mouth, twice a day (p.o. bid) for 14 days, followed by a 7 day rest versus observation.