title: Test and teach. Number fifty-three. Diagnosis: Spindle cell ductal carcinoma in situ with neuroendocrine differentiation.
authors.affiliation: Department of Pathology, Singapore General Hospital, Singapore. beetlechew@cheerful.com
authors.forename: Ivy
authors.initials: I
authors.lastname: Chew
authors.forename: Siok Bian
authors.initials: SB
authors.lastname: Ng
authors.forename: Puay-Hoon
authors.initials: PH
authors.lastname: Tan
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008408:Mastectomy; D046529:Microscopy, Electron, Transmission