title: Primary mucinous cystadenocarcinoma of the breast with endocervical-like mucinous epithelium.
abstract: BACKGROUND
  Primary mucinous cystadenocarcinoma of the breast is an extremely rare entity. To the best of our knowledge, only 17 patients have been described in the PubMed database.
  
  
  METHODS
  Here, we report a primary breast mucinous cystadenocarcinoma with endocervical-like mucinous epithelium in a 62-year-old woman. The patient was followed for 5 months without any adjuvant treatment and she continues to be disease free.
  
  
  CONCLUSIONS
  Primary breast mucinous cystadenocarcinoma usually displays unique pathologic and immunohistochemical characteristics simulating its ovarian counterparts; it seems to have a good prognosis after complete resection.
authors.affiliation: Department of Pathology, The Affiliated Hospital of Medical College, Qingdao University, China.
authors.forename: Dong-Liang
authors.initials: DL
authors.lastname: Lin
authors.affiliation: Department of General Surgery, The Affiliated Hospital of Medical College, Qingdao University, China.
authors.forename: Ji-Lin
authors.initials: JL
authors.lastname: Hu
authors.affiliation: Department of Pathology, The Affiliated Hospital of Medical College, Qingdao University, China.
authors.forename: Shi-Hong
authors.initials: SH
authors.lastname: Shao
authors.affiliation: Department of Ultrasonography, The Affiliated Hospital of Medical College, Qingdao University, China.
authors.forename: Dong-Mei
authors.initials: DM
authors.lastname: Sun
authors.affiliation: Department of Pathology, The Affiliated Hospital of Medical College, Qingdao University, China ; Department of Pathology, Shanghai Medical College, Fudan University, China.
authors.forename: Ji-Gang
authors.initials: JG
authors.lastname: Wang
keywords: Breast cancer; Immunohistochemistry; Mucinous cystadenocarcinoma