title: [Comparison of efficacy for mammography versus ultrasonography in stages T1 and Tis breast cancer].
abstract: OBJECTIVE
  To compare the efficacy of mammography versus ultrasonography in detecting stages T1 and Tis breast cancer.
  
  
  METHODS
  Mammography and ultrasonograhpy data were collected for 1 630 stages T1 and Tis breast cancer from July 2011 to July 2013. Chi-square test was used to analyze the detection rate and diagnostic rate of two methods.
  
  
  RESULTS
  Among 1 630 patients with 1 665 focus, 1 559 focus were detected by both methods. In term of detection rate, mammography had a higher rate in mostly fatty and scattered fibroglandular breast while ultrasonography offered advantages in extremely dense breast. And statistical significance existed among these groups (P < 0.05). In heterogeneously dense group, the detection rate of two methods had no statistical significance (P > 0.05). In term of diagnostic rate, mammography had a higher diagnostic rate in mostly fatty and scattered fibroglandular breast. On the contrary, ultrasonography was superior to mammography in heterogeneously and extremely dense breast. No statistical significance existed among these groups (P > 0.05). Furthermore the focus were classified into mass and non-mass types based on mammographic images. As the volume of fibroglandular tissue increased, the amount of mass type focus increased while that of non-mass type focus decreased.
  
  
  CONCLUSIONS
  For stages T1 and Tis breast cancer, mammography has higher detection and diagnostic rates in mostly fatty and scattered fibroglandular breast while ultrasonography is better for heterogeneously and extremely dense breast. There are some correlations between fibroglandular and focus types based on mammographic images.
authors: Department of Breast Imaging, Tianjin Medical University Cancer Institute & Hospital, Tianjin 300060, China.
authors: Ju
authors: J
authors: Wang
authors: Department of Breast Imaging, Tianjin Medical University Cancer Institute & Hospital, Tianjin 300060, China. Email: cjr.liupeifang@vip.163.com.
authors: Peifang
authors: P
authors: Liu
authors: Department of Breast Imaging, Tianjin Medical University Cancer Institute & Hospital, Tianjin 300060, China.
authors: Junnan
authors: J
authors: Li
authors: Department of Breast Imaging, Tianjin Medical University Cancer Institute & Hospital, Tianjin 300060, China.
authors: Chun
authors: C
authors: Qing
authors: Department of Breast Imaging, Tianjin Medical University Cancer Institute & Hospital, Tianjin 300060, China.
authors: Yumei
authors: Y
authors: Zhao
authors: Department of Breast Imaging, Tianjin Medical University Cancer Institute & Hospital, Tianjin 300060, China.
authors: Zhenzhen
authors: Z
authors: Shao
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008327:Mammography; D009367:Neoplasm Staging; D014463:Ultrasonography