SLC7A5 and metastatic malignant neoplasm in the lymph nodes: High LAT1 expression was associated with poorer prognosis in patients with negative (P = 0.0556) and positive (P = 0.0009) surgical margins (data not shown) and in patients with negative (P = 0.0004) and positive (P = 0.1546) for lymph node metastasis (data not shown), indicating that high LAT1 expression is an individual prognostic factor.