title: Ultrasound features of retroareolar breast carcinoma.
abstract: OBJECTIVE
  The goal of this study was to report the ultrasound features of retroareolar breast carcinoma (RABC).
  
  
  METHODS
  The ultrasound examinations of the breast of 53 women with RABC were reviewed. They had a mean age of 67.2 years±13.4 (standard deviation [SD]) (range: 46-85 years). RABC were defined as carcinomas located less than 2cm from the nipple on mammogram.
  
  
  RESULTS
  Among the 53 RABC, 42 (42/53; 79%) were invasive ductal carcinomas, 6 (6/53; 11%) were invasive lobular carcinomas, 4 (4/53; 8%) were ductal carcinomas in situ and 1 (1/53; 2%) was intracystic papillary carcinoma. The mean size of RABCs was 22.5mm±8.2 (SD) (range: 7.2-54.8mm). RABCs presented as a mass (53/53; 100%) with an irregular shape (44/53; 83%), a non-parallel orientation (37/53; 70%), non-circumscribed margins (50/53; 94%), a hypoechoic echotexture (46/53; 87%,) posterior attenuation (45/53; 85%) and increased vascularity (37/53; 70%) on Doppler ultrasound.
  
  
  CONCLUSIONS
  On ultrasound, RABC have a presentation similar to that of breast carcinoma in other locations.
authors.affiliation: Department of Radiology, Thunder Bay Regional Health Center, 930 Oliver Road, Thunder Bay, Ontario, Canada. Electronic address: romuald.ferre@gmail.com.
authors.forename: R
authors.initials: R
authors.lastname: Ferre
authors.affiliation: Radiology Department, MUHC, McGill University, Montreal, Quebec, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Pare
authors.affiliation: Radiology Department, MUHC, McGill University, Montreal, Quebec, Canada.
authors.forename: B
authors.initials: B
authors.lastname: Mesurolle
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009558:Nipples; D012189:Retrospective Studies; D016217:Ultrasonography, Mammary
keywords: Breast carcinoma; Breast imaging; Nipple areolar complex; Retroareolar carcinomas; Ultrasound