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False-positive cytology in diagnostic laparoscopy due to ectopic pancreas
C E Sloots1, L M de Brauw, F J Bot
1Department of Surgery, University Hospital Maastricht, Maastricht, The Netherlands.
Background:
Report on a case of incorrect diagnosis after laparoscopy and peritoneal fluid sampling.
Methods:
Case description and literature review.
Results:
Diagnostic laparoscopy is a frequently used tool. In a patient with chronic abdominal pain, a diagnostic laparoscopy was performed, and a peritoneal fluid sample was taken. Cytology of the aspirated peritoneal fluid revealed an adenocarcinoma. At laparotomy, ectopic pancreas was found as the source of the false-positive cytology.
Conclusion:
In the diagnosis of adenocarcinomas from peritoneal fluid aspirates without an obvious clinical location (tumor), ectopic pancreatic tissue should be considered in the differential diagnosis.