NGFR and metastatic malignant neoplasm in the lymph nodes: Although differences did not reach statistical significance, pT1/pT2, no lymph node metastasis, UICC stage I, no perilymphatic invasion, no perivascular invasion, and pathological margin/negative were observed more frequently in the stromal CD271high staining group than in the stromal CD271 low staining group (Table 2).