title: [Invasive ductal carcinomas of breast showing partial reversed cell polarity are associated with lymphatic tumor spread].
abstract: OBJECTIVE
  To investigate the relationship between partial reversed cell polarity (PRCP) and lymphatic tumor spread in invasive ductal carcinoma (IDC), not othervise specified (NOS).
  
  
  METHODS
  Immunohistochemistry (EnVision method) was used to examine the expression of epithelial membrane antigen (EMA) and the reversed cell polarity in 199 cases of IDC.
  
  
  RESULTS
  Of the 199 cases, including five cases with micropapillary differentiation,30 cases with PRCP and 164 cases of IDC-NOS (without micropapillary differentiation and/or PRCP), lymphovascular invasion was seen in four (4/5), 13(43.3%) and 30 cases (18.3%) respectively; nodal metastasis was seen in four (4/5), 19 (63.3%) and 56 cases (34.1%) respectively. The rates of lymphovascular invasion and nodal metastasis were significantly higher in IDC with PRCP or IMPC than IDC-NOS (P = 0.00); there was however no significant difference between IDC with PRCP and IMPC for lymphovascular invasion and nodal metastasis (P = 0.18, P = 0.64).
  
  
  CONCLUSIONS
  IDC with PRCP, similar to IMPC, is more likely to show lymphovascular invasion and nodal metastasis. Complete or partial reversal of cell polarity may play a significant role in lymphatic tumor spread.
authors.affiliation: Department of Pathology, Shanghai Changning District Maternity and Infant Health Hospital, Shanghai 200051, China. zhxuejun.1965@yahoo.com.cn
authors.forename: Xue-jun
authors.initials: XJ
authors.lastname: Zhao
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.forename: Jin-ping
authors.initials: JP
authors.lastname: Xu
authors.forename: Zhong-ying
authors.initials: ZY
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Hai-yun
authors.initials: HY
authors.lastname: Zhu
authors.forename: Xiao-hong
authors.initials: XH
authors.lastname: Chu
mesh_terms: D001943:Breast Neoplasms / Q000378:metabolism / Q000473:pathology*; D018270:Carcinoma, Ductal, Breast / Q000378:metabolism / Q000473:pathology*; D002291:Carcinoma, Papillary / Q000378:metabolism / Q000473:pathology*; D016764:Cell Polarity; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis; D008875:Middle Aged; D018396:Mucin-1 / Q000378:metabolism; D009361:Neoplasm Invasiveness
chemical_list: D018396:Mucin-1