“…The rate of potentially curative resection has been reported to be high up to 98% (3,14,16). The prognostic factors for ampulla of Vater cancers following surgery have been reported to be jaundice (21,22), depth of tumor infiltration (3,4,22), pancreatic invasion (3,12,15,16,21), lymph node metastasis (3,4,14,15,22), perineural invasion (3,16,18,21), tumor differentiation (14,16), and residual tumor status (16). The routine use and duration of preoperative biliary drainage in jaundiced patients was controversial.…”