Waike lilun yu shijian (Jul 2021)

Prognosis of invasive micropapillary carcinoma versus invasive ductal carcinoma of the breast: a comparative analysis after propensity score matching

  • CHEN Yuanyuan, YE Xin, TANG Yongzhe, WANG Jie, HE Qi

DOI
https://doi.org/10.16139/j.1007-9610.2021.04.014
Journal volume & issue
Vol. 26, no. 04
pp. 353 – 360

Abstract

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Objective To investigate the difference in prognosis between invasive micropapillary carcinoma (IMPC) and invasive ductal carcinoma(IDC) of the breast and the factors influencing the prognosis of breast carcinoma using propensity score matching (PSM). Methods The retrospective study was performed enrolling the patients with IMPC or IDC in Shanghai Jiao Tong University Breast Cancer Database and the data of clinicopathological characteristics and treatments and follow-up from January 2011 to December 2017. The differences in clinicopathological characteristics and treatments between IMPC and IDC were analyzed. PSM was conducted to balance the confounding factors between IMPC group and IDC group. The difference in prognosis and the factors influencing prognosis of breast carcinoma between two groups after PSM were analyzed. Results A total of 111 cases in IMPC group and 2 865 cases in IDC group were studied. There were more cases in IMPC group who had the expression including estrogen receptor, progesterone receptor and human epidermal growth factor receptor 2, and lymph node metastasis, mastectomy and endocrine therapy when compared those with the cases in IDC group (P<0.05). The rate of breast cancer-free interval (BCFI) in IMPC group was significantly lower than that in IDC group (P=0.022). No significant difference was present in rate of overall survival (OS) between two groups (P=0.268). There were 109 pairs of patients after PSM. The significant difference was not found in clinicopathological characteristics and treatments (P>0.05), and in the rate of BCFI or the rate of OS (P>0.05) between IMPC group and IDC group. It was shown in multivariate analysis of clinicopathological characteristics and treatments that the index of more than 3 positive lymph nodes was an independent risk factor associated with BCFI. Conclusions The prognosis was similar between IMPC and IDC after PSM and the index of more than 3 positive lymph nodes could be an independent risk factor of prognosis.

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