DGCR8 and metastatic malignant neoplasm in the lymph nodes: Mutation of DGCR8 gene showed a significant association with lymph node metastasis (OR = 1.80, 95% CI = 1.02–3.17, p = 0.041), high tumor size (OR = 2.73, 95% CI = 1.45–5.13, p = 0.002), and distant metastasis (OR = 2.45, 95% CI = 1.03–5.85, p = 0.043).