title: Pathologic quiz case: a 49-year-old woman with a lower outer quadrant left breast mass. Matrix-producing metaplastic carcinoma of the breast.
authors.affiliation: Department of Pathology, The University of Chicago, Chicago, Ill 60615, USA. sunati@hotmail.com
authors.forename: Sunati
authors.initials: S
authors.lastname: Sahoo
authors.forename: Wendy M
authors.initials: WM
authors.lastname: Recant
mesh_terms: D001707:Biopsy, Needle; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000473:pathology*; D002277:Carcinoma / Q000473:pathology*; D005109:Extracellular Matrix / Q000473:pathology; D005260:Female; D006801:Humans; D008679:Metaplasia; D008875:Middle Aged