PSD3 and metastatic malignant neoplasm in the lymph nodes: Univariate logistic regression confirmed that higher PSD3 expression (P=0.024), primary neoplasm focus type (P=0.007), lymph node metastasis (P<0.001), distant metastasis (P=0.035), and status (P=0.037) were associated with an incidence rate of classical histological type (Table 3).