title: Posterior acoustic shadowing in benign breast lesions: sonographic-pathologic correlation.
abstract: OBJECTIVE
  To show a variety of benign breast lesions that exhibit posterior acoustic shadowing on sonography.
  
  
  METHODS
  The cases illustrate a variety of pathologic breast conditions that were collected at a referral breast center at a tertiary medical center.
  
  
  RESULTS
  A variety of pathologic conditions are discussed, with pathologic-imaging correlation.
  
  
  CONCLUSIONS
  Although posterior acoustic shadowing is a sonographic feature that is most commonly associated with mammary malignancies, this sonographic finding may also be seen with benign breast lesions.
authors.affiliation: Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-4283, USA. weinstei@oasis.rad.upenn.edu
authors.forename: Susan P
authors.initials: SP
authors.lastname: Weinstein
authors.forename: Emily F
authors.initials: EF
authors.lastname: Conant
authors.forename: Carolyn
authors.initials: C
authors.lastname: Mies
authors.forename: Geza
authors.initials: G
authors.lastname: Acs
authors.forename: Steven
authors.initials: S
authors.lastname: Lee
authors.forename: Chandra
authors.initials: C
authors.lastname: Sehgal
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001941:Breast Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D016217:Ultrasonography, Mammary