title: Accuracy of colonoscopy in localizing colonic cancer.
abstract: It is important to establish the precise localization of colonic cancer preoperatively; while colonoscopy is regarded as the diagnostic gold standard for colorectal cancer, its ability to localize the tumor is less reliable.
  
  
  OBJECTIVE
  To define the accuracy of colonoscopy in identifying the location of colonic cancer.
  
  
  METHODS
  All of the patients who had a colorectal cancer diagnosed by colonoscopy at the Institute of Gastroenterology and Hepatology, Iaşi and subsequently received a surgical intervention at three teaching hospitals in Iaşi, between January 2001 and December 2005, were included in this study. Endoscopic records and operative notes were carefully reviewed, and tumor localization was recorded.
  
  
  RESULTS
  There were 161 patients (89 men, 72 women, aged 61.3 +/- 12.8 years) who underwent conventional surgery for colon cancer detected by colonoscopy during the study period. Twenty-two patients (13.66%) had erroneous colonoscopic localization of the tumors. The overall accuracy of preoperative colonoscopic localization was 87.58%.
  
  
  CONCLUSIONS
  Colonoscopy is an accurate, reliable method for locating colon cancer, although additional techniques (i.e., endoscopic tattooing) should be performed at least for small lesions.
authors.affiliation: Institute of Gastroenterology and Hepatology, "Gr. T. Popa" University of Medicine and Pharmacy, Iaşi.
authors.forename: C
authors.initials: C
authors.lastname: Stanciu
authors.forename: Anca
authors.initials: A
authors.lastname: Trifan
authors.forename: Saad Alla
authors.initials: SA
authors.lastname: Khder
mesh_terms: D000368:Aged; D003082:Colectomy; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000601:surgery; D003113:Colonoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012189:Retrospective Studies