Group | Pathological types | ||||||
---|---|---|---|---|---|---|---|
Duodenal tumor | Carcinoma of head of pancreas | Carcinoma of ampulla | Cancer of the lower segment of common bile duct | Mesenchymoma | Innocent tumour | Other tumors | |
Group A (86 cases) | 36 | 21 | 7 | 7 | 6 | 5 | 4 |
Group B (89 cases) | 41 | 32 | 3 | 4 | 4 | 3 | 2 |
Statistical | 5.645 | ||||||
P value | 0.464 |