title: [The role of peritoneal aspiration cytology diagnosis of acute appendicitis].
abstract: BACKGROUND
  The purpose of this study is to search the role of peritoneal aspiration cytology in acute appendicitis.
  
  
  METHODS
  Peritoneal aspiration cytology was (PAC) conducted for fifty suspected acute appendicitis patients before their operations. PAC findings was compared with histopathologic results.
  
  
  RESULTS
  Negative appendicectomy rate according to clinical diagnosis was 20%. PAC was positive in 32 and negative in 18 patients. 93.75% PAC (+) patients had acute appendicitis, 44.4% PAC (-) patients had normal appendices. The false positive rate was 6.2% and the false negative rate was 55.6%. The sensitivity, the specificity, the positive predictive value, the negative predictive value of PAC for the diagnosis of acute appendicitis were 75%, 80%, 93.8%, 44.4%, respectively and the accuracy was 76%.
  
  
  CONCLUSIONS
  PAC positive results support the diagnosis of acute appendicitis strongly. However, PAC (-) results don't exclude the diagnosis of acute appendicitis.
authors.affiliation: Yüzüncü Yil Universitesi Tip Faklutesi Genel Cerrahi Anabilim Dali, Van, Turkey. erolkisli@hotmail.com
authors.forename: Erol
authors.initials: E
authors.lastname: Kisli
authors.forename: Ersin
authors.initials: E
authors.lastname: Ozgören
authors.forename: Hasan
authors.initials: H
authors.lastname: Arslantürk
authors.forename: Metin
authors.initials: M
authors.lastname: Aydin
authors.forename: Osman
authors.initials: O
authors.lastname: Güler
authors.forename: Irfan
authors.initials: I
authors.lastname: Bayram
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D001062:Appendectomy; D001064:Appendicitis / Q000473:pathology* / Q000601:surgery; D001202:Ascitic Fluid / Q000166:cytology*; D001707:Biopsy, Needle / Q000592:standards; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012422:Rupture, Spontaneous; D012680:Sensitivity and Specificity