title: [A rare case of small-cell diffuse invasive breast lobular carcinoma].
abstract: The paper describes a rare case of invasive lobular carcinoma with the diffuse growth type simulating malignant non-Hodgkin lymphoma. The immunohistochemical study of the tumor established a marked expression of pancytokeratin, GSDFP-15, receptors to estrogen and progesterone, CD 7, Bcl-2, expression CD 3, CD 5, CD 10, CD 20, CD 23, CD 30, ALK, Bcl-6, inactive expression of E-cadherin. The ability of invasive lobular carcinoma to simulate malignant non-Hodgkin lymphoma determines the diagnostic value and significance of an immunohistochemical study to confirm the epithelial nature of the tumor.
authors.forename: T A
authors.initials: TA
authors.lastname: Novitskaia
authors.forename: E A
authors.initials: EA
authors.lastname: Turkevich
authors.forename: V N
authors.initials: VN
authors.lastname: Ellinidi
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000473:pathology; D018275:Carcinoma, Lobular / Q000175:diagnosis* / Q000378:metabolism / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis; D009361:Neoplasm Invasiveness
chemical_list: D014408:Biomarkers, Tumor