As for clinicopathological parameters, we found that the immunohistochemistry staining of ALDH1 expression by tumor cells was significantly correlated with larger tumor size (P = 0.024) and later stage (P = 0.043), but not with other features including age, lymph node status, histopathology, grade, tumor embolus, and relapse. This evidence concerns the gene ALDH1A1 and neoplasm.