Difference between revisions of "Non-invasive breast carcinoma"

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==Atypical lobular hyperplasia==
==Atypical lobular hyperplasia==
*Abbreviated ''ALH''.
*Abbreviated ''ALH''.
 
{{Main|Atypical lobular hyperplasia}}
===General===
*May occur with ''ductal involvement by cells of atypical lobular hyperplasia'' (abbreviated ''DIALH'').<ref name=pmid3343034>{{Cite journal  | last1 = Page | first1 = DL. | last2 = Dupont | first2 = WD. | last3 = Rogers | first3 = LW. | title = Ductal involvement by cells of atypical lobular hyperplasia in the breast: a long-term follow-up study of cancer risk. | journal = Hum Pathol | volume = 19 | issue = 2 | pages = 201-7 | month = Feb | year = 1988 | doi =  | PMID = 3343034 }}</ref>
**ALH with DIALH has a risk of developing breast cancer that is similar to [[LCIS]].
 
===Microscopic===
Features:
*Extent criterium: <50% of terminal duct lobular unit (TDLU) is involved.
*See ''[[lobular carcinoma in situ]]'' for details.
 
DDx:
*[[Lobular carcinoma in situ]].
*[[Lobular carcinoma]].
 
===IHC===
*E-cadherin -ve ''or'' incomplete membrane staining.


==Lobular carcinoma in situ==
==Lobular carcinoma in situ==
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===IHC===
===IHC===
*E-cadherin -ve ''or'' incomplete membrane staining.
*[[E-cadherin]] -ve ''or'' incomplete membrane staining.
*p120 catenin +ve cytoplasmic.<ref name="Sarrió-2004">{{Cite journal  | last1 = Sarrió | first1 = D. | last2 = Pérez-Mies | first2 = B. | last3 = Hardisson | first3 = D. | last4 = Moreno-Bueno | first4 = G. | last5 = Suárez | first5 = A. | last6 = Cano | first6 = A. | last7 = Martín-Pérez | first7 = J. | last8 = Gamallo | first8 = C. | last9 = Palacios | first9 = J. | title = Cytoplasmic localization of p120ctn and E-cadherin loss characterize lobular breast carcinoma from preinvasive to metastatic lesions. | journal = Oncogene | volume = 23 | issue = 19 | pages = 3272-83 | month = Apr | year = 2004 | doi = 10.1038/sj.onc.1207439 | PMID = 15077190 }}</ref>
*p120 catenin +ve cytoplasmic.<ref name="Sarrió-2004">{{Cite journal  | last1 = Sarrió | first1 = D. | last2 = Pérez-Mies | first2 = B. | last3 = Hardisson | first3 = D. | last4 = Moreno-Bueno | first4 = G. | last5 = Suárez | first5 = A. | last6 = Cano | first6 = A. | last7 = Martín-Pérez | first7 = J. | last8 = Gamallo | first8 = C. | last9 = Palacios | first9 = J. | title = Cytoplasmic localization of p120ctn and E-cadherin loss characterize lobular breast carcinoma from preinvasive to metastatic lesions. | journal = Oncogene | volume = 23 | issue = 19 | pages = 3272-83 | month = Apr | year = 2004 | doi = 10.1038/sj.onc.1207439 | PMID = 15077190 }}</ref>
**Membranous staining in DCIS.
**Membranous staining in DCIS.
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