title: Comparison of primary breast cancer size by mammography and sonography.
abstract: OBJECTIVE
  To compare tumor size by mammography and sonography and align with pathological results in primary breast cancer cases.
  
  
  METHODS
  We retrospectively reviewed 95 primary breast cancer patients who underwent mammography and sonography from January 2011 to June 2012. The largest tumor diameter was chosen as sizing reference for each imaging modality. The measurements of mammography and sonography were considered concordant if they were within the measurement of pathological results±0.5 cm. Pearson's correlation coefficient was calculated for imaging results.
  
  
  RESULTS
  The range of the maximum diameter was 0.6 cm-10.5 cm and mean value was 3.81±2.04 cm by pathological results, 0.7 cm-12.4 cm and 3.99±2.19 cm by mammography, and 0.9 cm-11.0 cm and 3.63±2.01 cm by sonography, respectively. Sonography (R: 0.754), underestimated tumor size, but had a better correlation with pathological tumor size compared to mammography (R: 0.676), which overestimated tumor size.
  
  
  CONCLUSIONS
  Sonography is superior to mammography in assessment of primary breast cancer.
authors.affiliation: X-Ray Department, Tangshan Gongren Hospital, Tangshan, Hebei, China E-mail : gryyyangxinyu@163.com.
authors.forename: Jian-Tao
authors.initials: JT
authors.lastname: Wang
authors.forename: Li-Ming
authors.initials: LM
authors.lastname: Chang
authors.forename: Xin
authors.initials: X
authors.lastname: Song
authors.forename: Li-Xin
authors.initials: LX
authors.lastname: Zhao
authors.forename: Jun-Tao
authors.initials: JT
authors.lastname: Li
authors.forename: Wei-Guo
authors.initials: WG
authors.lastname: Zhang
authors.forename: Ying-Bin
authors.initials: YB
authors.lastname: Ji
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Cai
authors.forename: Wei
authors.initials: W
authors.lastname: Di
authors.forename: Xin-Yu
authors.initials: XY
authors.lastname: Yang
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008327:Mammography / Q000379:methods*; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012189:Retrospective Studies; D016217:Ultrasonography, Mammary / Q000379:methods*; D055815:Young Adult