[Table 5.2.a.1] Initial symptoms and the size of the tumor in the pancreatic head [Table 5.2.a.2] Initial symptoms and the size of the tumor in the pancreatic body and tail [Figure 5.2.a.3] Initial symptom and the survival of patients with TS1 tumor [Figure 5.2.a.4] Initial symptom and the survival of patients with TS1 tumor in the body and tail of the pancreas