Pathological features FAS-positive 16 cases FAS-negative 16 cases p value
Tumor size (mm) 24.7 21.1 0.4672
Node metastasis (%) 43.8 6.3 0.0373
Differentiation (well/moderate/poor) 14/2/0 12/2/2002 0.3406
Ki-67 positivity (%) 62.5 43.8 0.4795
P53 positivity (%) 31.3 62.5 0.1556
Duodenal invasion 81.3 56.3 0.2524
Pancreatic invasion 37.5 18.8 0.4331
MUC 1 / MUC 2 6-Oct 9-Jul 0.4595
Table 2: Pathological features of carcinoma of the ampulla of Vater according to FAS immunohistochemical staining.