ArticlePediatric emergency care2026
Retrocecal Appendicitis in Children: Similar Clinical Presentations Despite Diagnostic Challenges.
Article in Pediatric emergency care, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThe anatomic position of the appendix may influence both the clinical presentation and diagnostic imaging accuracy in pediatric appendicitis, but its impact remains uncertain. This study aimed to determine the prevalence of retrocecal appendicitis in children and to evaluate whether appendix positioning affects ultrasound diagnostic performance or clinical outcomes.
methodsThis was a retrospective cohort study including all children 0 to 18 years of age who presented to the Mayo Clinic Rochester Emergency Department between 2018 and 2023 and were diagnosed with appendicitis during their evaluation or subsequent hospitalization. Appendix location was determined by imaging or surgical documentation. Demographics, symptoms, signs, and complication rates were collected for patients with retrocecal appendicitis (RCA) and non-retrocecal appendicitis (NRCA).
resultsFour hundred seven patients were included with 12.5% having RCA. Ultrasound was obtained in 92% of patients with RCA versus 82% of NRCA (rate difference: 10%, 95% CI: 2%-19%, P =0.018). In patients who received ultrasound imaging, findings were equivocal or falsely negative in 53% of RCA patients versus 30% of NRCA patients (RD = 24%, 9%-39%; P =0.003). Computed tomography (CT) was obtained in 51% of RCA patients versus 29% of NRCA (RD = 22%, 8%-37%; P =0.003) and was equivocal or falsely negative at similar rates in RCA (12%) and NRCA (13%; P =0.88). Clinically, there were no differences in diarrhea, emesis, location of abdominal pain, or white blood cell counts between RCA and NRCA. Rates of perforation, abscess formation, hospitalization longer than 7 days, and repeat hospitalizations were also similar.
conclusionsRetrocecal appendicitis is a common anatomic variant in children that presents with similar clinical features and outcomes compared with non-retrocecal appendicitis. However, its retrocecal position reduces the diagnostic sensitivity of limited abdominal ultrasound, often necessitating additional imaging with computed tomography. Despite these diagnostic challenges, retrocecal positioning is not associated with a worsened clinical course.
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