title: Colon capsule endoscopy: detection of colonic polyps compared with conventional colonoscopy and visualization of extracolonic pathologies.
abstract: BACKGROUND
  Conventional colonoscopy (CC) is the gold standard for diagnostic examination of the colon. However, the overall acceptance of this procedure is low due to patient fears of complications or embarrassment. Colon capsule endoscopy (CCE) represents a minimally invasive, patient-friendly procedure that offers complete visualization of the entire intestine.
  
  
  OBJECTIVE
  To assess the PillCam Colon 2 (Given Imaging Ltd, Israel) capsule with regard to feasibility, sensitivity and specificity for the detection of colonic pathologies and additional recorded extracolonic findings.
  
  
  METHODS
  CCE was performed before CC in patients indicated for CC for known or suspected colonic disease. The results of both techniques were compared with regard to polyp detection. Additionally, bowel preparation and extracolonic pathologies were analyzed.
  
  
  RESULTS
  Twenty-four patients (mean age 51.1 years) were included in the analysis. Visualization of the colon was complete in 23 CCs and 17 CCEs. No adverse events or major technical failures occurred. CC detected 47 polyps and CCE detected 43 polyps of any size (per-finding sensitivity 90.9%, specificity 67.6%). The accuracy of CCE in detecting polyp carriers was 81.5% (per-patient analysis). On average, the colon was adequately cleansed in 90.1% of patients. CCE identified esophageal, gastric and small bowel pathologies in seven (24%), nine (38%) and 14 (58%) patients, respectively.
  
  
  CONCLUSIONS
  CCE proved to be technically feasible and safe. Acceptable sensitivity and moderate specificity levels in polyp detection were recorded. Bowel preparation was adequate in most patients. Because extracolonic pathologies were effectively visualized, new indications for the PillCam Colon 2 may be defined.
authors: Alexander F
authors: AF
authors: Hagel
authors: Erwin
authors: E
authors: Gäbele
authors: Martin
authors: M
authors: Raithel
authors: Wolfgang H
authors: WH
authors: Hagel
authors: Heinz
authors: H
authors: Albrecht
authors: Thomas M
authors: TM
authors: de Rossi
authors: Christine
authors: C
authors: Singer
authors: Thomas
authors: T
authors: Schneider
authors: Markus F
authors: MF
authors: Neurath
authors: Michael J
authors: MJ
authors: Farnbacher
mesh_terms: D000328:Adult; D000368:Aged; D053704:Capsule Endoscopy / Q000009:adverse effects / Q000379:methods*; D002400:Cathartics / Q000008:administration & dosage; D003111:Colonic Polyps / Q000175:diagnosis*; D003113:Colonoscopy / Q000379:methods*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D055815:Young Adult
chemical_list: D002400:Cathartics