ALDH1A1 and metastatic malignant neoplasm in the lymph nodes: When evaluated in primary tumors and/or lymph node metastasis, stromal ALDH1 was independent predictor of longer disease-free (Cox Regression model, HR = 0.806, CI95% 0.693–0.938, p = 0.005, n = 359) and metastasis-free survival (Cox Regression model, HR = 0.712, CI95% 0.555–0.913, p = 0.007, n = 204) (Table 1C).