Tumoral ALDH1 expression evaluated in lymph node metastasis and primary tumors and/or lymph node metastasis indicated shorter metastasis-free (Kaplan-Meier log rank analysis, p = 0.008 and p = 0.012, respectively) in the stage I-III patients (Supl. Here, ALDH1A1 is linked to metastatic malignant neoplasm in the lymph nodes.