title: Changes in ultrasound shear wave elastography properties of normal breast during menstrual cycle.
abstract: Elastography is a novel technique capable of noninvasively assessing the elastic properties of breast tissue. Because the risk factors for breast cancer include hormonal status and proliferation, the aim of our study was to estimate the intensity of sonoelastographic changes during the menstrual cycle.
  
  
  METHODS
  Eight women aged 20-23 years with regular menstrual cycles underwent B-mode sonography and sonoelastography (ShearWave on Aixplorer, France) on days 3, 10, 17 and 24.
  
  
  RESULTS
  Mean values of glandular and fat tissue elasticity did not change statistically significantly during the menstrual cycle as well as glandular to fat tissue ratio. During almost the whole cycle differences between outer and inner quadrants in glandular and fat tissue were statistically significant. The lowest values of elasticity occurred on the 10th day and the highest on the 24th of the menstrual cycle. There were statistically significant differences in elasticity between inner and outer quadrants of both breasts close to day 3 and 17 of the menstrual cycle.
authors.affiliation: Department of Mother's and Child's Heath, University of Medical Science Poznan, Gynecologic and Obstetrical University Hospital, Poznan, Poland. parzymsk@gpsk.am.poznan.pl
authors.forename: P
authors.initials: P
authors.lastname: Rzymski
authors.forename: A
authors.initials: A
authors.lastname: Skórzewska
authors.forename: T
authors.initials: T
authors.lastname: Opala
mesh_terms: D001940:Breast / Q000502:physiology*; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D004548:Elasticity; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D016217:Ultrasonography, Mammary / Q000379:methods*; D055815:Young Adult