Wang Shushu,Zhang Yi,Qi Xiaowei,Chen Qingqiu,Jiang Jun.Correlation of types of residual tumor with expressions of ER, PR and HER-2 after neoadjuvant chemotherapy in breast cancer[J].J Amry Med Univ (J Third Mil Med Univ),2010,32(21):2336-2339.
Wang Shushu,Zhang Yi,Qi Xiaowei,Chen Qingqiu,Jiang Jun.Correlation of types of residual tumor with expressions of ER, PR and HER-2 after neoadjuvant chemotherapy in breast cancer[J].J Amry Med Univ (J Third Mil Med Univ),2010,32(21):2336-2339.DOI:
Objective To study the correlation between types of residual tumor and expressions of ER
PR and HER-2 after neoadjuvant chemotherapy for breast cancer. Methods Samples were collected from 90 women with stages Ⅱ and Ⅲ invasive ductal carcinoma through mastectomy. The samples were cut into sub-serial section of total breast. The morphology of residual tumor was observed and typed under microscope after neoadjuvant chemotherapy. Expressions of ER
PR and HER-2 was detected by immunohistochemistry (IHC). Correlation between expression levels of ER
PR and HER-2 in different types of residual tumor was analyzed before and after neoadjuvant chemotherapy. Results The residual tumor was divided into typeⅠ(solitary residual tumor)
typeⅡ(multifocal residual tumor) and type Ⅲ(main mass with smaller satellite nodules)
accounting for 61% (55/90)
33% (30/90) and 6% (5/90)
respectively. No significant difference was observed in expression levels of ER
PR
HER-2 before and after neoadjuvant chemotherapy (P0.05). The expression levels of ER
PR and HER-2 were lower after neoadjuvant chemotherapy than before neoadjuvant chemotherapy. Conclusion ER
PR and HER-2 cannot be used to evaluate the types of residual tumor after neoadjuvant chemotherapy. MRI in combination with sub-serial section of total breast should be used to show the morphology of residual tumor before operation.