According to the satisfying results reported by Fisher, Veronesi and other authors who used a breast-conserving operation modality in the treatment of breast cancer since 1980 109 patients with a carcinoma up to 2.5 cm underwent this kind of operation at the surgical department of the Hanusch-Hospital, Vienna. Although the median follow-up-time (29 months) is too short for conclusive statements, results of recurrence and survival compared to 162 cases of modified radical mastectomy were satisfying. Therefore--following certain indications--breast conserving operation is offered to our patients as a possible method.