title: Appendix perforation in appendix duplication in a man: a case report.
abstract: BACKGROUND
  Although appendix duplication is diagnosed as a rare congenital anomaly of the alimentary tract in childhood, a few adult cases have also been reported. Here we report a case of appendix duplication with perforated appendicitis co-existing with acute appendicitis in an adult patient.
  
  
  METHODS
  A 33-year-old Caucasian man was admitted to our Emergency Department with right-sided lower-quadrant pain that we explored for presumed complicated appendicitis. On exploration, a perforated inflamed appendix was found coexisting with a second inflamed appendix which was subserosal and retrocecal. Appendectomies were performed, and the pathological examination confirmed the signs of acute inflammation in both appendixes.
  
  
  CONCLUSIONS
  Surgeons in emergency services should be aware of anatomical anomalies such as duplication and malposition of the appendix, even in patients with a history of previous appendectomy, because misdiagnosis of appendix duplication may lead to a poor clinical outcome and medicolegal issues.
authors.affiliation: General Surgery, Basaksehir State Hospital, Istanbul, 34230, Turkey. dremelcanbay@gmail.com.
authors.forename: Emel
authors.initials: E
authors.lastname: Canbay
authors.forename: Emel
authors.initials: E
authors.lastname: Akman