caa a22 4500 605495351 CHVBK 20210128100531.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00261-014-0223-9 doi (NATIONALLICENCE)springer-10.1007/s00261-014-0223-9 Does abdominal pain duration affect the accuracy of first-line MRI for pediatric appendicitis? [Elektronische Daten] [Jeffrey Koning, John Naheedy, Peter Kruk] Purpose: To compare the accuracy of first-line MRI for pediatric appendicitis between children with different durations of abdominal pain. Materials and methods: Between November 2012 and September 2013, 364 pediatric patients underwent MRI for clinically suspected appendicitis. Patients were stratified into one group with pain lasting less than or equal to 1day and pain longer than 1day. Results: In patients with early abdominal pain, appendicitis occurred in 83 of 208 patients (39.9%) vs. 49 of 156 patients with pain longer than 1day (31.4%, p=0.09). Sensitivity and specificity of MRI in patients with early abdominal pain were 97.6% (95% CI [91.6%-99.3%]) and 94.4% (95% CI [88.9%-97.3%]), respectively, vs. 93.9% (95% CI [83.5%-97.9%]) and 97.2% (95% CI [92.1%-99.4%]), respectively, in patients with pain longer than 1day in duration (p=0.36 and p=0.35 for sensitivity and specificity, respectively). Conclusions: First-line MRI is accurate for acute appendicitis in children presenting with early abdominal pain, and may be appropriate as the initial examination in children. Further prospective studies are needed to compare MRI vs. ultrasound as the initial examination in children with early abdominal pain to help further delineate a diagnostic imaging algorithm. Springer Science+Business Media New York, 2014 MRI nationallicence Appendicitis nationallicence Abdominal pain nationallicence Pediatrics nationallicence Gadolinium nationallicence Appendix nationallicence Koning Jeffrey Department of Radiology, University of California San Diego, 200 West Arbor Drive MC 8756, 92103-8756, San Diego, CA, USA aut Naheedy John Department of Radiology, University of California San Diego, 200 West Arbor Drive MC 8756, 92103-8756, San Diego, CA, USA aut Kruk Peter Department of Radiology, University of California San Diego, 200 West Arbor Drive MC 8756, 92103-8756, San Diego, CA, USA aut Abdominal Imaging Springer US; http://www.springer-ny.com 40/2(2015-02-01), 352-359 0942-8925 40:2<352 2015 40 261 https://doi.org/10.1007/s00261-014-0223-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00261-014-0223-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Koning Jeffrey Department of Radiology, University of California San Diego, 200 West Arbor Drive MC 8756, 92103-8756, San Diego, CA, USA aut NATIONALLICENCE 700 1- Naheedy John Department of Radiology, University of California San Diego, 200 West Arbor Drive MC 8756, 92103-8756, San Diego, CA, USA aut NATIONALLICENCE 700 1- Kruk Peter Department of Radiology, University of California San Diego, 200 West Arbor Drive MC 8756, 92103-8756, San Diego, CA, USA aut NATIONALLICENCE 773 0- Abdominal Imaging Springer US; http://www.springer-ny.com 40/2(2015-02-01), 352-359 0942-8925 40:2<352 2015 40 261