title: Parasitic infections of the appendix as a cause of appendectomy in adult patients.
abstract: OBJECTIVE
  Assessment of frequency and clinical findings of parasitic infections for etiology of acute appendicitis.
  
  
  METHODS
  Data of 1452 patients who were carried out appendectomy between January 1999 and December 2012 were analyzed retrospectively. Appendectomy was performed in 1159 of the patients with a pre diagnosis of acute appendicitis. Demographics, physical findings, radiologic and laboratory studies, operative findings, pathological results, presence and type of parasitosis were investigated.
  
  
  RESULTS
  Among the 1159 patients done appendectomy with a pre diagnosis of acute appendicitis, 719 (62%) were males and 440 (38%) were females. Parasitic infection was demonstrated in 17 (1.4%) of them. Mean average age of these patients was 36.6 ± 20.1 years. Enterobius vermicularis was present in 15 (88.2%) and Entamoeba histolytica in 2 (11.8%) of the patients. Of the pathology specimens of appendix consisting Enterobius vermicularis, 12 (80%) were normal appendix tissues, 1 (6.6%) was acute uncomplicated appendicitis and 2 (13.3%) were perforated appendicitis. One (50%) of the two specimens consisting Entamoeba histolytica was normal appendix and the other (50%) was acute appendicitis.
  
  
  CONCLUSIONS
  Differential diagnosis of parasitic infections in etiology of acute appendicitis should be made properly. It must be remembered that this attention can save patients from a negative laparotomy and morbidity and mortality of it.
authors.affiliation: Department of General Surgery, Başkent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Hakan
authors.initials: H
authors.lastname: Yabanoğlu
authors.forename: Hüseyin Özgür
authors.initials: HÖ
authors.lastname: Aytaç
authors.forename: Emin
authors.initials: E
authors.lastname: Türk
authors.forename: Erdal
authors.initials: E
authors.lastname: Karagülle
authors.forename: Kenan
authors.initials: K
authors.lastname: Calışkan
authors.forename: Sedat
authors.initials: S
authors.lastname: Belli
authors.forename: Fazilet
authors.initials: F
authors.lastname: Kayaselçuk
authors.forename: Mehmet Akın
authors.initials: MA
authors.lastname: Tarım
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000818:Animals; D001062:Appendectomy; D001064:Appendicitis / Q000175:diagnosis* / Q000469:parasitology / Q000601:surgery; D001065:Appendix / Q000469:parasitology / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004748:Entamoeba histolytica / Q000302:isolation & purification / Q000502:physiology; D004749:Entamoebiasis / Q000175:diagnosis* / Q000469:parasitology / Q000601:surgery; D017229:Enterobiasis / Q000175:diagnosis* / Q000469:parasitology / Q000601:surgery; D004757:Enterobius / Q000302:isolation & purification / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult