For lymph node metastasis, higher MUC1 expression was related to poor prognosis (n = 11, RR = 1.40, 95% CI: 1.14-1.72, p = 0.002), but MUC4 was not (n = 2, RR = 1.23, 95% CI: 0.82-1.83, p = 0.317). This evidence concerns the gene MUC4 and metastatic malignant neoplasm in the lymph nodes.