This report evaluates the results of conservative surgery plus radiotherapy (QUART) in a group of 123 patients from the screening programme of the District Health Board USSL 41 in Brescia, Italy (over 250 tumours diagnosed in two screening rounds, between 1987 and 1993). To date no recurrence of neoplasms in the operated breast have been diagnosed in either of the two QUART groups (64 patients from the first round, average follow-up 28 months, median 66 months; 59 patients from the second round, average follow-up 28 months, median 30 months). A new carcinoma in the contralateral breast occurred in 3 patients (2 from the first and 1 from the second round), while in 3 cases there was a recurrence in another site (2 from the first and 1 from the second round). These results confirm both the proven effectiveness of conservative treatment in the local control of breast tumours, and the importance of the correct choice of conservative treatment in optimising aesthetic and therapeutic results.