Objective To detect the microsatellite instability (MSI) of mitochondrial DNA (mtDNA) in lung squamous carcinoma and to investigate its significance in carcinogenesis.

• 目的分析肺鳞癌患者癌组织线粒体DNA(mitochondrial DNA,mtDNA)非编码D-环区序列的微卫星不稳(mitochondrial microsatellite instability,mtMSI)现象并探讨其意义。