A non-invasive adenocarcinoma of the breast characterized by a proliferation of monomorphic cells completely filling the lumina. The overall lobular architecture is preserved. It is frequently multifocal (90% in some series) and bilateral. It seldom becomes invasive; however there is an increased risk of infiltrating ductal adenocarcinoma.
lung adenocarcinoma in situ
mammary Paget disease
Mixed Lobular and Ductal Breast Carcinoma +
mucoepidermoid breast carcinoma
sebaceous breast carcinoma
signet ring cell breast carcinoma
Synonyms
Exact Synonyms:
LCIS
;
lobular Ca in situ of breast
;
lobular Ca in situ of the breast
;
lobular carcinoma in situ
;
lobular carcinoma in situ (LCIS)
;
lobular carcinoma in situ of breast
;
lobular carcinoma in situ of the breast
;
lobular carcinoma in situ of the breast (LCIS)
;
non-infiltrating lobular breast carcinoma
;
non-infiltrating lobular carcinoma