Table 5 summarizes the results which showed that the following were independent risk factors for poor prognosis: albumin <3.9 g/dL (OR 9.68, CI 95% 1.92–17.61; P = 0.002), lymph node metastasis (OR 19.32, CI 95% 3.82–33.00; P < 0.01), solid component diameter >20 mm (OR 5.94, CI 95% 1.28–9.39; P = 0.015), and postoperative complication (OR 6.70, CI 95% 1.40–11.50; P = 0.010). This evidence concerns the gene ALB and metastatic malignant neoplasm in the lymph nodes.