title: Well-differentiated papillary mesothelioma: peritoneal implants are not always metastases in the presence of cancer.
abstract: BACKGROUND
  Well-differentiated papillary mesothelioma is a rare condition that can cause diagnostic uncertainty. Its appearance resembles metastatic deposits and in the presence of a known primary can often be confused for such.
  
  
  METHODS
  In this case, we present a patient who had WDPM in the presence of gastric cancer and emphasise the difficulties in making the diagnosis.
  
  
  CONCLUSIONS
  We highlight the need for a high index of suspicion, biopsies at staging laparoscopy and undertake a review of the literature regarding this uncommon condition.
authors.affiliation: Clinical Research Fellow, Centre for Cancer Research and Cell Biology, Queen's University, UK.
authors.forename: G W
authors.initials: GW
authors.lastname: Irwin
authors.forename: A
authors.initials: A
authors.lastname: Ervine
authors.forename: J A
authors.initials: JA
authors.lastname: Kennedy
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D008654:Mesothelioma / Q000473:pathology*; D009362:Neoplasm Metastasis / Q000473:pathology; D010534:Peritoneal Neoplasms / Q000473:pathology* / Q000556:secondary; D013274:Stomach Neoplasms / Q000473:pathology*; D013276:Stomach Ulcer / Q000150:complications / Q000175:diagnosis
keywords: Well-differentiated papillary mesothelioma; malignancy; mesothelioma; peritoneum