title: Low-grade adenosquamous carcinoma of the breast--A case report with a BRCA1 germline mutation.
abstract: Breast cancers occurring in women with germline BRCA1 mutations tend to fall into the category of triple-negative or basal-like phenotypes, such as metaplastic carcinoma. Low-grade adenosquamous carcinoma of the breast is a rare variant of metaplastic carcinoma. We present the case of a 49-year-old woman with a past medical history of invasive ductal breast carcinoma 13 years ago, and who was recently diagnosed as having a low-grade adenosquamous carcinoma in the same breast. Genetic analysis of blood DNA revealed a BRCA1 mutation. To our knowledge, BRCA1 mutation in association with a low-grade adenosquamous carcinoma of the breast has not yet been reported. Thus, it may be important to consider the possibility of an association, but supplemental studies are needed.
authors.affiliation: Department of Senology and Gynecopathology, Erasmus University Hospital, Free University of Brussels (ULB), Route de Lennik 808 CP610 B. 1070 Brussels, Belgium.
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Noël
authors.forename: Frédéric
authors.initials: F
authors.lastname: Buxant
authors.forename: Corinne
authors.initials: C
authors.lastname: Engohan-Aloghe
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D001943:Breast Neoplasms / Q000235:genetics* / Q000473:pathology*; D018196:Carcinoma, Adenosquamous / Q000235:genetics* / Q000473:pathology*; D018270:Carcinoma, Ductal, Breast / Q000473:pathology; D005260:Female; D019398:Genes, BRCA1; D018095:Germ-Line Mutation; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000235:genetics / Q000473:pathology
chemical_list: D014408:Biomarkers, Tumor