title: Primary mucinous borderline tumor of the vermiform appendix mimicking ovarian carcinoma; case report.
abstract: BACKGROUND
  Primary adenocarcinoma of the vermiform appendix is a very rare entity. Borderline mucinous tumor of the appendix is a much more rare disease.
  
  
  METHODS
  We present a 71-year-old woman with primary mucinous borderline tumor of the vermiform appendix. She was misdiagnosed as an ovarian carcinoma patient and operated on by a gynecologic oncology team. Her frozen section analysis of an appendicial mass resulted as borderline tumor of appendix vermiformis, and right hemicolectomy, as is advised in invasive colon tumors, was not carried out.
  
  
  CONCLUSIONS
  Borderline mucinous tumor of the appendix vermiformis should be kept in mind in patients who have pseudomyxoma peritonei during surgery. Tumoral resection may be the definitive therapy in these patients.
authors.affiliation: Department of Obstetrics and Gynecology, Florence Nightingale Hospital, Istanbul, Turkey. cem.baykal@ttmail.com
authors.forename: C
authors.initials: C
authors.lastname: Baykal
authors.forename: I C
authors.initials: IC
authors.lastname: Türkmen
authors.forename: F
authors.initials: F
authors.lastname: Hizli
authors.forename: G B
authors.initials: GB
authors.lastname: Doğusoy
authors.forename: I
authors.initials: I
authors.lastname: Sertep
authors.forename: I
authors.initials: I
authors.lastname: Dünder
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D000368:Aged; D001063:Appendiceal Neoplasms / Q000473:pathology*; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D010051:Ovarian Neoplasms / Q000473:pathology*; D011553:Pseudomyxoma Peritonei / Q000473:pathology