Purpose To study the relation of the perineural Invaslon in breast invasive ductal carcinoma tothe size, histological classification, TNM period, metastases of lymph nodes and 5 years survival rate of the tu-mor.

• 目的：对乳腺浸润性导管癌神经周浸润与肿瘤的大小、肿瘤的组织学分级、肿瘤的TNM分期、淋巴结转移、5年存活率、肿瘤标志物CEA等之间的关系进行探讨。