[Clinical study on the metastatic patterns of lymph node in XXXX ].

@entity1 @entity5 @entity957 @entity2 @entity3 @entity420
BACKGROUND: To investigate the relationship between the size of @entity5 , pathologic classification, cell differentiation or location of @entity5 and lymph node @entity3 in @entity2 . METHODS: Three hundred and thirty-two @entity1 with @entity2 underwent pulmonectomy plus extensive dissection of hilar and mediastinal nodes. The law of lymph node @entity3 was analyzed. RESULTS: A total of 3 280 lymph nodes were removed. Metastatic rates of N1 and N2 were 29.9% and 22.4% respectively. The total lymph node metastatic rates of T1, T2, and T3 diseases were 8.5%, 27.4% and 61.2% respectively ( P < 0.005). No lymphatic @entity3 was observed in well-differentiated @entity957 , however, the lymph node metastatic rates in moderate- and poor-differentiated @entity957 were 16.8% and 19.6% respectively. The lymph node metastatic rates were 27.5% and 71.6% in moderate- and poor-differentiated @entity420 respectively ( P < 0.005). The total lymph node metastatic rates in central and peripheral @entity957 were 19.6% and 11.7% respectively ( P < 0.005), while in @entity420 , the rates were 57.9% and 24.0% respectively ( P < 0.005). The N2 metastatic rates in central and peripheral @entity957 were 10.9% and 2.9% respectively ( P < 0.005), while in @entity420 , the rates were 47.5% and 17.8% respectively ( P < 0.005 ). Under the same T status, cell differentiation or location of @entity5 , the metastatic rate of @entity420 was much higher than that of @entity957 ( P < 0.005 ). CONCLUSIONS: The frequency of lymph node @entity3 significantly correlate with size of @entity5 , pathological classification, cell differentiation and location of @entity5 .
