ObjectiveTo investigate the clinicopathologic characteristics, prognosis and its risk factors of triple-negative breast cancer(TNBC).

MethodsThe clinical data of 210 patients with TNBC(observation group) and 70 non-TNBC patients(control group) from September 2010 to September 2015 were retrospectively analyzed.

ResultsThe lymph node metastasis rate was related to the tumor size, and the larger the tumor size, the higher the lymph node metastasis rate was(P < 0.01).Compared with the coincidence rate of pathological diagnosis of ultrasound or mammography, the coincidence rate of combined diagnosis was the highest(97.46%)(P < 0.01), and the coincidence rates of ultrasound and mammography were 84.76% and 70.0%, respectively(P < 0.01).The pathological histological classification in observation group was higher than that in control group(P < 0.01).Prognostic analysis showed that the recurrence rate and survival rate in observation group(42.38%, 74.29%) were higher and lower than those in control group(28.57%, 85.71%) respectively(P < 0.05).The larger the tumor size, the higher the lymph node metastasis rate was(P < 0.01).The survival rate in patients with negative lymph node(86.00%) was higher than that in patients with positive lymph node(65.45%)(P < 0.01).

ConclusionsCompared with the non-TNBC, the tumor size is large, the age of patient is young, the pathological histological classification is high, the relapse and metastasis are ease, and the prognosis is poor in TNBC.Ultrasonography and mammography are the effective methods in auxiliary diagnosis of TNBC, and the correct rate of combination of both methods is higher.Larger tumor size and lymph node metastasis are the risk factors of TNBC death.