Abstract
Objective To discuss the clinicopathological features and prognostic factors of patients with triple negative breast cancer (TNBC) in Shanxi province. Methods The medical records of 958 female TNBC patients who were admitted to Shanxi Provincial Cancer Hospital and the First Hospital of Shanxi Medical University from January 2005 to December 2015 were retrospectively analyzed. The clinicopathological features and prognostic factors were summarized. Results The median age of TNBC patients in Shanxi province was 46 years old (21-87 years old), the median body mass index (BMI) was 24.42 kg/m2 (15.0-37.5 kg/m2), and the rural population was slightly more. The left breast cancer was more than the right breast cancer, and 492 patients (51.4%) were in stage T2. The main histological type was invasive ductal carcinoma. The main surgical method was modified radical mastectomy. Univariate Cox regression analysis showed that the patient's place of residence, fertility status, age at first birth, breastfeeding history, tumor size, American Joint Committee on Cancer Staging, lymph node metastasis, and surgical approach were associated with the risk of death in TNBC patients (all P 0.05). Multivariate Cox regression analysis showed that rural residents (HR = 1.46, P = 0.044), positive lymph node metastasis (HR = 2.51, P < 0.01), non-fertility (HR = 1.08, P =0.009) and no surgery (HR = 2.53, P = 0.004) were independent risk factors affecting the risk of death, a history of breastfeeding was a protective factor affecting the risk of death in TNBC patients (HR = 0.44, P = 0.013). Conclusions In Shanxi province, TNBC is more common in premenopausal women and the main pathological type is invasive ductal carcinoma. Rural population, lymph node positive, non-fertility, and no surgical treatment are independent risk factors for the prognosis of TNBC patients. Key words: Triple-negative breast cancer; Prognosis; Clinicopathological features
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