Intracystic papillary carcinoma of the breast (IPC) is usually seen in postmenopausal elderly women. Its prognosis is much better than other type of breast tumors, and usually do not contain invasive components. Surgical excision with negative margins and axillary sentinel lymph node sampling is the recommended treatment. Two cases of intracystic papillary carcinoma of the breast that was treated at our clinic are herein presented. Both cases were postmenopausal, were both positive for estrogen and progesterone receptors and negative for HER 2. They underwent breast-conserving surgery. One patient had an invasive focus, therefore axillary lymph node sampling was performed, and the sentinel lymph node was not metastatic. This patient received hormonal therapy as well as radiotherapy. In the other case, there was no invasive focus and the surgical margins were negative, therefore, additional surgery was not performed. The patient is receiving hormonal therapy. Intracystic carcinoma of the breast should be kept in mind especially in elderly patients with breast cysts, with clinically or radiologically suspicious features, and biopsy and local excision should be considered. Although there is not any standard approach for patients with IPC, each patient must be evaluated for surgery and should be individually assessed in terms of adjuvant therapy
Keywords: Cystic breast cancer, intra-cystic papillary carcinoma, breast cancer