Abstract：
AIMS:To compare the morphological and immunohistochemical characteristics of oestrogen receptor (ER)-negative and ER-positive ductal carcinoma in situ (DCIS) of the breast, in an attempt to establish more objective criteria for the classification of DCIS. METHODS AND RESULTS:Sections of 64 cases of in-situ carcinoma of the breast were stained for ER, progesterone receptors (PgR), androgen receptors (AR), c-erbB-2 and p53, using the immunoperoxidase technique. The cases included 60 DCIS and four lobular carcinoma in situ (LCIS). Four DCIS lesions were associated with foci of microinvasion. The 60 DCIS cases included 31 high grade, 23 intermediate grade and six low grade. Twenty-four DCIS cases (40%) were ER-negative and 36 were positive. ER negativity was significantly associated with high nuclear grade (88% versus 27% for ER-positive cases, P < 0.001), PgR negativity (100% versus 25%, P < 0.001), c-erbB-2 positivity (79% versus 14%, P < 0.001) and p53 positivity (58% versus 6%, P < 0.001). There was no difference between ER-negative and -positive DCIS as regards AR expression, with 91% of cases in each group being AR-positive. Of the four cases of DCIS with microinvasion, three were ER- and PgR-negative, all four were c-erbB-2-positive and AR-positive and one was p53-positive. None of the four LCIS was ER, PgR or AR-negative and none was c-erbB-2- or p53-positive. CONCLUSIONS:There is a highly significant direct relationship between ER negativity in DCIS and high nuclear grade, PgR negativity and c-erbB-2 and p53 positivity. We suggest that immunohistological assessment of ER status may help in providing a more objective way of classifying DCIS.
journal_name
Histopathologyjournal_title
Histopathologyauthors
Baqai T,Shousha Sdoi
10.1046/j.1365-2559.2003.01612.xkeywords:
subject
Has Abstractpub_date
2003-05-01 00:00:00pages
440-7issue
5eissn
0309-0167issn
1365-2559pii
1612journal_volume
42pub_type
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