DOI: 10.36347/sjams.2018.v06i01.014

Pages: 69-71

The primary mucinous cystadenocarcinoma of the breast is an extremely rare and primary malignancy of breast. It was first described by Koenig and Tavassoli in 1998. It is defined as carcinoma composed of generally tall columnar cells with basally located nuclei and abundant intracytoplasmic mucin. The tumor bears a striking resemblance to mucinous cystadenocarcinoma of the ovary, pancreas and appendix. Immunohistochemical findings suggest that they may develop independently of estrogenic stimulation. Although the nature of mucinous cystadenocarcinoma breast is invasive, patient prognosis appears to be good despite lymph node metastasis.