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a Comparison of results of biopsy and peritoneal fluid cytology performed in staging laparoscopy with RT-PCR results in 115 patients with pancreatic adenocarcinoma. b 28% of patients were found to have unresectable disease at staging laparoscopy. An additional 17% of patients had CEA mRNA in peritoneal fluid detected by RT-PCR as their only evidence of metastatic disease
