OBJECTIVE: To investigate the prognosis of @entity1 with N1 @entity1149 , and to compare the clinicopathological features and survival between @entity1 with unexpected N1 (cN0- @entity3121 ) and expected N1 disease (cN1- @entity3121 ) after operation for @entity1149 . METHODS: This study retrospectively reviewed and analyzed the medical records of 183 @entity1 who underwent surgery and pathologically diagnosed with N1 @entity1149 between January 2006 and December 2010. Among them, 78 @entity1 had negative findings before surgery (cN0- @entity3121 group), and 105 @entity1 had positive findings before surgery (cN1- @entity3121 group). The clinicopathological features, median survival time and 5-year survival rates between the two groups were analyzed. RESULTS: @entity1 in the cN1- @entity3121 group had greater pathologic T stage, larger @entity5 , greater number and stations of positive N1 lymph nodes, and greater percentage of pneumonectomy than those in the cN0- @entity3121 group (P < 0.05). For the @entity1 with cN0- @entity3121 , the @entity1685 was 47.0 months and the 1-, 3-, and 5-year OS were 85.9%, 57.4%, and 42.5%, respectively. For the @entity1 with cN1- @entity3121 , the @entity1685 was 30.0 months and the 1-, 3-, and 5-year OS were 74.3%, 44.6%, and 28.8%, respectively. There were significant differences in survival between the two groups (P < 0.05). The locoregional recurrence rate of cN0- @entity3121 group was lower than in the cN1-pN1group (P < 0.05). The multivariate analysis showed that T staging and N staging before surgery, lymph node @entity3 to multiple N1 stations and adjuvant chemotherapy were independent prognostic factors. CONCLUSIONS: Different clinical features of N1 @entity1149 has certain heterogeneity. @entity1 with unexpected N1 disease show better survival and lower locoregional recurrence rate than did those with expected N1 disease.

[Prognostic analysis of XXXX with unsuspected pathologic N1 @entity1149 ].

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumors'] @entity1149 :: ('MESH:D002289', 'Disease') :: ['non-small cell lung cancer'] @entity1685 :: ('MESH:C563551', 'Disease') :: ['MST'] @entity3121 :: ('5270', 'Gene') :: ['pN1'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis']
@entity1 :: (9606,Species) :: ['patients']
