title: [Invasive infra centimetric breast lobular carcinoma: ultrasonographic features].
abstract: OBJECTIVE
  To evaluate the ability of breast ultrasound to detect and analyze small (less than 1 cm in size) invasive lobular carcinomas.
  
  
  METHODS
  and methods. A retrospective analysis of 93 small invasive carcinomas measuring less than 10 mm in size diagnosed between 1998 and 2000 in our institution was performed. In this group, 15 invasive lobular carcinomas were identified in 12 patients. All mammograms and ultrasound examinations were reviewed.
  
  
  RESULTS
  Twelve cases of less than 10 mm invasive lobular carcinomas were diagnosed. Two lesions in one patient and one in an other patient were not detected at ultrasound and mammogram (multifocal carcinomas). All invasive lobular carcinomas were found as hypoechogenic masses with ill-defined margins and posterior shadowing. Four lesions showed evidence of microlobulations, 6 lesions an hyperechogenic halo and only one showed a vertical axis. The sensitivity of ultrasound in this group was recorded as 80% (12/15).
  
  
  CONCLUSIONS
  The study confirms a high sensitivity of ultrasound examination in detection and characterization of small infiltrative lobular carcinoma.
authors.affiliation: Service de Radiologie, Hôpital Général de Montréal, 1650 Avenue Cedar, Montréal, Québec H3G 1A4, Canada. benoit.mesurolle@muhc.mcgill.ca
authors.forename: B
authors.initials: B
authors.lastname: Mesurolle
authors.forename: F
authors.initials: F
authors.lastname: Mignon
authors.forename: M
authors.initials: M
authors.lastname: Ariche-Cohen
authors.forename: P A
authors.initials: PA
authors.lastname: Goumot
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D018275:Carcinoma, Lobular / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D012189:Retrospective Studies; D014463:Ultrasonography
vernacular_title: Cancers lobulaires invasifs infracentimétriques: aspects échographiques.