title: Mammographic features of 455 invasive lobular carcinomas.
abstract: Of 6,009 cases of breast cancer studied, 455 (7.6%) were invasive lobular carcinoma (ILC); 341 of these (75%) were pure ILC and 114 (25%) were ILC mixed with ductal forms. The mammographic features were compared with those of the 5,554 other breast carcinomas. Pure ILCs were less frequently round (1% vs 11%) and more frequently spicular (28% vs 23%) or with architectural distortion (18% vs 6%) than the other breast carcinomas. Microcalcifications were less common (24% vs 41%) and retraction of the skin (25% vs 21%) and nipple (26% vs 17%) was more common in pure ILC than in the other breast carcinomas. When complementary magnification views were obtained, only 50% were helpful in diagnosis of ILC while 75% were helpful in diagnosis of other breast carcinomas. Malignancy was less frequently diagnosed in ILC (57%) than in the other breast carcinomas (64%). The results were intermediate in the mixed ILC group.
authors.affiliation: Department of Diagnostic Radiology, Institut Curie, Paris, France.
authors.forename: M
authors.initials: M
authors.lastname: Le Gal
authors.forename: L
authors.initials: L
authors.lastname: Ollivier
authors.forename: B
authors.initials: B
authors.lastname: Asselain
authors.forename: M
authors.initials: M
authors.lastname: Meunier
authors.forename: M
authors.initials: M
authors.lastname: Laurent
authors.forename: P
authors.initials: P
authors.lastname: Vielh
authors.forename: S
authors.initials: S
authors.lastname: Neuenschwander
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000473:pathology; D003581:Cytodiagnosis; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D009361:Neoplasm Invasiveness