title: Postexcisional breast magnetic resonance imaging in patients with breast cancer: predictable findings of residual cancer.
abstract: OBJECTIVE
  The purposes of this study were to present magnetic resonance imaging (MRI) findings in patients with breast cancer soon after the excisional biopsy and before definitive surgery and to assess the diagnostic accuracy of MRI for prediction of residual cancer.
  
  
  METHODS
  Breast MRI was performed on 51 patients with breast cancer diagnosed by excisional biopsy. The morphologic type of postexcisional site was categorized into regular thin rim enhancement (P1), peripheral nodular enhancement (P2), satellite nodule within 2 mm from the cavity margin (P3), and irregularly thickened wall enhancement (P4). Enhancement pattern was categorized into "washout," "plateau," and "progressive" enhancement. All patients underwent definitive surgery after MRI. Magnetic resonance imaging findings were correlated with the pathologic findings.
  
  
  RESULTS
  The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of MRI for prediction of residual cancer were 92.1%, 69.2%, 78.4%, 88.6%, 56.3%, respectively.
  
  
  CONCLUSIONS
  MRI is a sensitive method for prediction of residual cancer after excisional biopsy.
authors: Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors: Jeong-Ah
authors: JA
authors: Kim
authors: Eun Ju
authors: EJ
authors: Son
authors: Eun-Kyung
authors: EK
authors: Kim
authors: Min Jung
authors: MJ
authors: Kim
authors: Jin Young
authors: JY
authors: Kwak
authors: Joon
authors: J
authors: Jeong
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D001943:Breast Neoplasms / Q000473:pathology* / Q000601:surgery; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D018365:Neoplasm, Residual / Q000175:diagnosis*; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA