Liu B, et al. - The expression status of extracellular matrix metalloproteinase inducer (EMMPRIN) in non-small cell lung cancer (NSCLC) was studied. The clinical value for the diagnosis of NSCLC was also assessed. A contribution of serum EMMPRIN testing to the NSCLC diagnosis was reported. Notably, overexpression of EMMPRIN was found to be related to lymphatic metastasis and advanced stage of NSCLC.