title: Bilateral synchronous breast cancer in an Asian population: mammographic and sonographic characteristics, detection methods, and staging.
abstract: OBJECTIVE
  This study was performed to compare the clinical and radiologic findings and pathologic staging between index cancer and contralateral synchronous breast cancers and to determine the roles of mammography and sonography in their detection.
  
  
  CONCLUSIONS
  Additional contralateral breast cancers in bilateral synchronous breast cancers are apt to be small and less palpable and to have less suspicious imaging findings and less advanced cancer staging than the index cancer. Bilateral whole-breast sonography with mammography is useful in the early detection of contralateral synchronous breast cancer.
authors: Department of Diagnostic Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seodaemun-ku Shinchon-dong 134, Seoul 120-752, South Korea.
authors: Min Jung
authors: MJ
authors: Kim
authors: Eun-Kyung
authors: EK
authors: Kim
authors: Jin Young
authors: JY
authors: Kwak
authors: Byeong-Woo
authors: BW
authors: Park
authors: Seung-Il
authors: SI
authors: Kim
authors: Ki Keun
authors: KK
authors: Oh
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D009367:Neoplasm Staging; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging* / Q000473:pathology; D012680:Sensitivity and Specificity; D016217:Ultrasonography, Mammary