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Validation of US as a first-line diagnostic test for assessment of pediatric ileocolic intussusception

, : Validation of US as a first-line diagnostic test for assessment of pediatric ileocolic intussusception. Pediatric Radiology 39(10): 1075-1079

From the early 1980s onward, US has been considered a possible primary modality to assess patients for ileocolic intussusception. Since 2001, our institution has routinely used US to assess patients for ileocolic intussusception. We analyzed 7 years of institutional experience to assess the value of US as a primary diagnostic test for intussusception. This study was IRB-approved. From 1 January 2001 through 16 December 2007 814 US examinations for intussusception were performed in children aged 10 years and younger. Clinical records and radiological reports were reviewed for each patient, and cases were classified as true-positive, true-negative, false-positive, or false-negative. Of the 814 US examinations, 112 (13.8%) were interpreted as positive for intussusception, and of these, 96 were confirmed by enema, 1 was confirmed by surgery, and 15 (13.4%) were false-positive. Of the 814 examinations, 700 (85.9%) were interpreted as negative for intussusception, and of these, 698 (99.7%) were true-negative, and 2 were false-negative. Less than 1% of studies were nondiagnostic. The overall sensitivity of US for detecting intussusception was 97.9% and specificity was 97.8%. The positive predictive value of the test was 86.6% and the negative predictive value was 99.7%. US is a sensitive and specific test for detecting ileocolic intussusception and should be utilized as a first-line examination for assessment of possible pediatric intussusception.


PMID: 19657636

DOI: 10.1007/s00247-009-1353-z

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