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자료유형
학술저널
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저널정보
대한병리학회 Journal of Pathology and Translational Medicine Journal of Pathology and Translational Medicine 제36권 제5호
발행연도
2002.1
수록면
323 - 327 (5page)

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Background : Most breast carcinomas are easily categorized as ductal or lobular. However, in some cases the distinction can be difficult since some tumors may have intermediate features of these two. Prior studies suggest that E-cadherin is useful to classify tumors as ductal or lobular, as it is lost in lobular but not in ductal carcinomas. Methods : We studied the histologic features and E-cadherin expression by immunohistochemistry in 57 cases of breast carcinomas, which were divided into three groups based on histology. Group 1 included 4 cases of infiltrating lobular carcinoma (IFL) and 1 case of lobular carcinoma in situ (LCIS) (n=5). Group 2 included infiltrating ductal carcinoma (IFD) with some features of IFL (n=48). Group 3 included a solid type of intraductal carcinoma (DCIS) (n=4). E-cadherin staining was scored as negative or positive. Results : All 5 cases from group 1 were E-cadherin negative, and all 4 DCIS cases were positive. Only 2 (0.04%) of the 48 cases from group 2 were Ecadherin negative. Conclusions : Our findings suggest that the majority of cases with morphologically IFD with some IFL features are ductal. E-cadherin immunostaining is of value in helping to characterize breast carcinomas with indeterminate morphologic features.

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