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Year : 2019  |  Volume : 60  |  Issue : 1  |  Page : 17-21

Immunohistochemical expression of vimentin in invasive breast carcinoma and its correlation with clinicopathological parameters

Department of Pathology, Smt. Kashibai Navale Medical College and General Hospital, Pune, Maharashtra, India

Correspondence Address:
Siddhi Gaurish Sinai Khandeparkar
E-517, The Island, Wakad, Pune - 411 057, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/nmj.NMJ_7_19

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Introduction: Breast carcinoma (BCa) is one of the most common cancers among women globally. Increased vimentin expression has been reported in various epithelial cancers. Aim: This study examines the expression of vimentin in BCa and its correlation with various prognostic factors such as tumor size, histological grade, lymph node status, estrogen receptor (ER), progesterone receptor (PR), HER2/neu, and Ki67 status. Materials and Methods: Seventy cases of BCa diagnosed between 2014 and 2015 were included in the study. A technique of manual tissue microarray was employed for the analysis of expression of immunohistochemical (IHC) markers such as vimentin, ER, PR, HER2/neu, and Ki67. Results were subjected to statistical analysis. Results: Vimentin was found positive in 53 (75.7%) cases of BCa, of which 18 cases (25.7%) were triple-negative BCa (TNBC). Positivity for ER, PR, Her2, and Ki67 was 32.8%, 31.4%, 60%, and 99%, respectively. Vimentin expression was significantly associated with ER negativity. All 53 cases expressing vimentin showed positive Ki67 labeling index; however, this was not statistically significant. Maximum vimentin expression was observed in the age group >50 years, postmenopausal women, BCa cases showing lymphovascular invasion (LVI), axillary lymph node metastasis, higher stage and higher grade of tumor, negative PR expression, and positive HER2/neu expression. However, this was not statistically significant. In TNBC, vimentin expression was significantly associated with histological grade and LVI. Conclusion: Vimentin expression was associated with well-established poor prognostic factors of BCa. Vimentin expression if routinely included in histopathology report would aid in better understanding of tumor behavior.

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