title: [Correlation between cholangiopancreatography by magnetic resonance and the endoscopic retrograde colangiopancreatography in hospitalized by biliary lithiasis in the University Hospital San Ignacio (Bogota-Colombia) between 2005 to 2011].
abstract: OBJECTIVE
  Determine the grade of agreement between the colangiopancreatography by magnetic resonance (CPRM) and the endoscopic retrograde colangio pancreatography (ERCP) in hospitalized patients by biliary lithiasis in a period of time in a reference hospital.
  
  
  METHODS
  Type of study, retrospective evaluation of diagnostic tool, the size of the sample was calculated from the pilot simple and was 320 patients. We recolected 354 patients that urderwent both studies (CPRM and ERCP), to evaluate the correlation between both procedures we used Kappa variation.
  
  
  RESULTS
  354 pacients were included, 226 women (63.8%), men 128 (36.2%), with mean age of 48 years. There was dilatation of the choledocus by CRMN in 60%, sensibility of 96, 7%, especificity of 40%, Kappa index 0,406 (IC 95%: 0, 32-0, 50) that indicates a moderate agreement. For the presence of choledocus calculi with CPRM was 54%, with sensibility of 72.6%, specificity of 68.3%, Kappa index 0.409 (IC 95%: 0.31-0.51), moderate agreement. For caculi in the gallbladder the kappa index was 0.246 weak. We identify 27% de false negatives for CRMN in detecting choledocusd lithiasis.
  
  
  CONCLUSIONS
  The CPRM and ERCP had a moderate correlation according to the Kappa index detecting dilatation and choledocus calculi in our patients. The number of false negatives for choledocolithiasis by CPRM leads us to seek in other prospective aleatory studies like endoscopic biliiopancreatic ultrasonopgraphy to compare the CPRM in patients with intermediate probability for choledocolithiasis.
authors.affiliation: Hospital Universitario San Ignacio. BogotÁ, Colombia.
authors.forename: Rómulo Darío
authors.initials: RD
authors.lastname: Vargas
authors.affiliation: Hospital Universitario San Ignacio. BogotÁ, Colombia; Pontificia Universidad Javeriana. BogotÁ, Colombia.
authors.forename: Claudia Patricia
authors.initials: CP
authors.lastname: Córdoba
authors.affiliation: Hospital Universitario San Ignacio. BogotÁ, Colombia; Pontificia Universidad Javeriana. BogotÁ, Colombia.
authors.forename: Luis Felipe
authors.initials: LF
authors.lastname: Uriza
authors.affiliation: Pontificia Universidad Javeriana. BogotÁ, Colombia.
authors.forename: Valeria
authors.initials: V
authors.lastname: Costa Barney
authors.affiliation: Pontificia Universidad Javeriana. BogotÁ, Colombia.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Mosquera-Klinger
authors.affiliation: Pontificia Universidad Javeriana. BogotÁ, Colombia.
authors.forename: Diego Alfonso
authors.initials: DA
authors.lastname: Ortega
mesh_terms: D000328:Adult; D000368:Aged; D002760:Cholangiopancreatography, Endoscopic Retrograde; D049448:Cholangiopancreatography, Magnetic Resonance; D002769:Cholelithiasis / Q000000981:diagnostic imaging*; D003105:Colombia; D005188:False Negative Reactions; D005260:Female; D006760:Hospitalization; D006785:Hospitals, University; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012680:Sensitivity and Specificity