[Study on clinicopathological classification and clinical and pathological characteristics in breast cancer]

To explored the relationship of clinicopathological classification and clinical and pathological characteristics of breast cancer and analyze the value in treatment.

The patients with invasive breast carcinoma had been treated between January 2011 and December 2012. The breast cancer have been divided into luminal A, luminal B, HER2-positive and triple-negative subtypes according to criteria of St. Gallen International Expert Consensus report 2011. The Mann-Whitney test and Kruskal-Wallis test were used to analyze the relationships between four subtypes and TNM staging, histopathological grading.

The 530 cases of invasive breast cancer patients were included in this study. The luminal A was 94 cases (17.7%), the luminal B was of 285 cases (53.8%), the HER2-positive was 59 cases (11.1%), and the triple-negative subtype was 92 cases (17.4%). In luminal B subtype, the HER2-positive was 56 (19.6%) and negative was 229 (80.4%). Most of luminal B was later in grade (71.7% of cases were more than II grade) and stage (66.7% were more than stage II).

Clinical pathological classification is important in the individualized treatments of breast cancer, and the Luminal types (A+B) are more than 71.5% of all breast cancer patients, and they should be paid more attention to the endocrine therapy; Luminal B type accounted for 53.8% of all breast cancer and it needs further study to improve the precision of the diagnosis and treatment.