SLC3A2 and metastatic malignant neoplasm in the lymph nodes: As shown in Table 1 and Figure 6B, SLC3A2 was significantly positively associated with serosal invasion (p = 0.002), and marginally associated with lymph node metastasis (p = 0.094, lymph node metastasis positive rate: 76.0% in low SLC3A2 group VS 86.7% in high SLC3A2 group).