Prospective, single institute based, open label, double arm, randomized controlled trial Hypothesis: Pain control after resection of hepatobiliary tumors in patients with PCEA is more effective than in patients with IV-PCA.
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Comparison of analgesic efficacy after major surgery in pancreatobiliary cancers: Intravenous patient-controlled analgesia versus patient-controlled epidural analgesia
Timeframe: Day 2 postoperatively