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Table 5 Correlation between pathological characteristics and lymph node metastasis

From: Long-term prognosis of surgical treatment for early ampullary cancers and implications for local ampullectomy

  Number of patients with lymph node metastasis P
Gross morphology   0.021
  Polypoid 11/62 (17.74%)  
  Ulcerative 11/27 (40.74%)  
Tumor size   0.046
  ≤1 cm 6/40 (15.00%)  
  >1 cm 16/49 (32.65%)  
Tumor grade   0.022
  Well 2/25 (8.00%)  
  Moderate/Poor 20/64 (31.25%)