PTEN and neoplasm: There were no remarkable differences in PTENP1 or PTEN expression between different patient demographics, while there were significant differences observed in the distribution of the tumor size (PTENP1: p = 0.031; PTEN: p = 0.027), clinic stage (PTENP1: p = 0.025; PTEN: p = 0.002) and invasion depth (PTENP1: p = 0.001; PTEN: p = 0.008).