MCs may be responsible for the defence reaction in BCC patients, but its mechanism is not correlated with PCNA expression.

• 皮肤基底细胞癌组织内肥大细胞增多可以是机体局部抗肿瘤反应形式 ,但其确切机制不清楚 ,且与瘤细胞PCNA表达高低无关