title: Mucinous Breast Cancer: a Review Study of 5 Year Experience from a Hospital-Based Series of Cases.
abstract: BACKGROUND
  Mucinous carcinoma (also known as colloid carcinoma) is a particular type of breast cancer characterized by the presence of extracellular mucin and is linked with a more favorable prognosis than invasive breast carcinoma of no special type. Mucinous carcinoma of the breast is an uncommon form of breast tumor, often presenting as a lobulated, moderately well circumscribed mass on mammography, sonography, and MRI imaging. It accounts for 1 to 7% of all breast cancers. Pure mucinous breast carcinomas are rare and account for about 2% of all primary breast carcinomas. Metastatic disease happens at a lower rate than in other types of invasive carcinoma.
  
  
  METHODS
  We present our 5 year experience with this particular pathology in a retrospective review study.
  
  
  RESULTS
  We identified 25 patients with mixed and pure mucinous breast cancer, the tumor size varied greatly from 2 to 19 cm in diameter. A subset of mixed mucinous carcinomas (8 cases) showed neuroendocrine differentiation or other associated premalignant lessions.
  
  
  CONCLUSIONS
  Mucinous carcinoma of the breast is a rare entity with a favorable prognosis due to low incidence of lymph node metastases. Pure mucinous breast carcinoma has an even rare.
authors.affiliation: Department of Pathology, Emergency University Hospital, Bucharest, Romania.
authors.forename: Adrian
authors.initials: A
authors.lastname: Dumitru
authors.affiliation: Department of Pathology, Emergency University Hospital, Bucharest, Romania.
authors.forename: Alexandru
authors.initials: A
authors.lastname: Procop
authors.affiliation: Department of Pathology, Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Andreea
authors.initials: A
authors.lastname: Iliesiu
authors.affiliation: Department of Dermatology, "Victor Babes" Hospital for Infectious and Lung Diseases, Bucharest, Romania.
authors.forename: Mircea
authors.initials: M
authors.lastname: Tampa
authors.affiliation: Department of Pathology, Emergency University Hospital, Bucharest, Romania.
authors.forename: Luminita
authors.initials: L
authors.lastname: Mitrache
authors.affiliation: Department of Pathology, Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Mariana
authors.initials: M
authors.lastname: Costache
authors.affiliation: Department of Pathology, Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Maria
authors.initials: M
authors.lastname: Sajin
authors.affiliation: Department of Pathology, Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Anca
authors.initials: A
authors.lastname: Lazaroiu
authors.affiliation: Department of Obstetrics-Gynecology, Emergency University Hospital, Bucharest, Romania.
authors.forename: Monica
authors.initials: M
authors.lastname: Cirstoiu
keywords: breast; mucinous carcinoma; neuroendocrine differentiation