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AIM: To investigate whether children with congenital common bile duct dilatation(CBDD) differ from children with obstructive CBDD in cholangiographic characteristics.METHODS: In this retrospective cohort study, the baseline data and the results of imaging analyses were reviewed among children who had endoscopic retrograde cholangiopancreatography(ERCP) due to CBDD. ERCP was performed on all pediatric patients by experienced pediatric endoscopists. The maximal transverse diameter of the common bile duct(CBD) was measured on ERCP. To assess whether ageadjusted CBDD could be used for differential diagnosis, a CBDD severity index(SI) was calculated by dividing the measured CBD diameter by the age-corrected maximal diameter of a normal CBD. RESULTS: A retrospective medical chart review revealed that 85 consecutive children under 16 years of age with hepatobiliary disease and CBDD were referred to Seoul Asan Medical Center. Fiftyfive(64.7%) children had congenital CBDD and 30(35.3%) had obstructive CBDD. The two groups did not differ significantly in terms of clinical characteristics except for sex. The congenital and obstructive CBDD groups did not differ significantly in terms of mean CBD diameter(19.3 ± 9.6 mm vs 12.2 ± 4.1 mm, P > 0.05). However, congenital CBDD cases had a significantly higher mean SI than obstructive CBDD cases(3.62 ± 1.64 vs 1.98 ± 0.71, P = 0.01). In multivariate analysis, an SI value ≥ 2.32 and comorbidity with anomalous union of pancreaticobiliary duct(APBDU) in ERCP independently predicted congenital CBDD.CONCLUSION: Measuring the CBD may aid the differential diagnosis of both CBDD and APBDU in children.
To investigate whether children with congenital common bile duct dilatation (CBDD) differ from children with obstructive CBDD in cholangiographic characteristics. METHODS: In this retrospective cohort study, the baseline data and the results of imaging analyzes who were reviewed among children who had endoscopic retrograde ERCP was performed on all pediatric patients by experienced pediatric endoscopists. The maximal transverse diameter of the common bile duct (CBD) was measured on ERCP. To review whether ageadjusted CBDD could be used for differential diagnosis, a CBDD severity index (SI) was calculated by dividing the measured CBD diameter by the age-corrected maximal diameter of a normal CBD. RESULTS: A retrospective medical chart review revealed that 85 consecutive children under 16 years of age with hepatobiliary disease and CBDD were referred to Seoul Asan Medical Center. Fiftyfive (64.7%) children had congenital CBDD and 30 (35.3%) had obst The two groups did not differ significantly in terms of clinical characteristics except for sex. The congenital and obstructive CBDD groups did not differ significantly from terms of mean CBD diameter (19.3 ± 9.6 mm vs 12.2 ± 4.1 mm, P> 0.05) However, congenital CBDD cases had a significantly higher mean SI than obstructive CBDD cases (3.62 ± 1.64 vs 1.98 ± 0.71, P = 0.01). In multivariate analysis, an SI value ≥ 2.32 and comorbidity with anomalous union of pancreaticobiliary duct (APBDU) in ERCP independently predicted congenital CBDD.CONCLUSION: Measuring the CBD may aid the differential diagnosis of both CBDD and APBDU in children.