Ductal carcinoma in situ is a preinvasive lesion in breast. Breast-conserving surgery followed by radiotherapy and mastectomy are the treatment options. Locoregional control rate is 96-100% after mastectomy. Patients with a local relapse can be treated by radiotherapy with or without chemotherapy. Our case who had a diagnosis of ductal carcinoma in situ was treated with mastectomy and axillary dissection followed by tamoxifen and 4 years after mastectomy she presented to our clinic with a local relapse. As the patient had no distant metastases, radiotherapy followed by chemotherapy was given. After treatment all the lesions disappeared. She is now well without any evidence of disease at 46th months’ follow-up.
Keywords: ductal carcinoma in situ, relapse, radiotherapy, chemotherapy