title: Mucinous cystadenoma arising in an isolated ileal duplication cyst.
abstract: BACKGROUND
  A 64-year-old woman with a 2-year history of bilateral breast carcinoma with axillary node metastasis and chemotherapy was admitted to our hospital due to tumor attached to the ileum, discovered during the routine control examination.
  
  
  CONCLUSIONS
  Computerized axial tomography showed oval cystic tumor in terminal ileum that measured 7 cm in the largest diameter and shared peritoneal coat with small intestine and was filled with dense fluid. Tumor abutted intestine but did not communicate with intestinal lumen. The surgical procedure was simple because cyst was attached to the antimesenteric side of the terminal ileum and did not communicate with the adjacent intestine. Pathohistological examination showed mucinous cystadenoma with high-grade epithelial dysplasia in the isolated ileal duplication cyst. The presence of epithelial dysplasia found in duplication cyst suggested potential to undergo malignant transformation.
  
  
  CONCLUSIONS
  In conclusion, we report a unique case of mucinous cystadenoma arising in isolated ileal duplication cyst. This case report expands the potential range of clinical variability of alimentary tract duplications. Surgical removal of alimentary tract duplication in patients without symptoms is also recommended because many potential complications or even malignant transformation may result from these anomalies.
authors.affiliation: Ljudevit Jurak Department of Pathology, Sestre milosrdnice University Hospital, Vinogradska cesta 29, 10000, Zagreb, Croatia. dtomas@kbsm.hr
authors.forename: Davor
authors.initials: D
authors.lastname: Tomas
authors.forename: Mario
authors.initials: M
authors.lastname: Zovak
authors.forename: Slaven
authors.initials: S
authors.lastname: Cicek
authors.forename: Petra
authors.initials: P
authors.lastname: Sulentić
authors.forename: Zoran
authors.initials: Z
authors.lastname: Jukić
authors.forename: Bozo
authors.initials: B
authors.lastname: Kruslin
mesh_terms: D018291:Cystadenoma, Mucinous / Q000473:pathology* / Q000601:surgery; D003560:Cysts / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007078:Ileal Neoplasms / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D014057:Tomography, X-Ray Computed