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Hepatobiliary scintigraphy in the distinction between biliary hypoplasia and biliary atresia
M El-Desouki1, M Mohamadiyah, A Al Rabeeah
1Department of Nuclear Medicine, College of Medicine, King Khalid University Hospital, Riyadh, Saudi Arabia.
Insights
Hepatobiliary scintigraphy effectively distinguishes biliary atresia from biliary hypoplasia in infants with persistent hyperbilirubinemia. This noninvasive imaging provides valuable diagnostic information for these critical pediatric liver conditions.
Area of Science:
- Pediatric Gastroenterology
- Diagnostic Imaging
- Hepatology
Background:
- Persistent hyperbilirubinemia in infants necessitates accurate diagnosis to differentiate serious conditions like biliary atresia (BA) from biliary hypoplasia (BH).
- Accurate differentiation is crucial for timely intervention and improved patient outcomes.
Purpose of the Study:
- To evaluate the diagnostic value of hepatobiliary scintigraphy in distinguishing between biliary atresia and biliary hypoplasia in infants.
- To assess the utility of hepatobiliary scintigraphy as a noninvasive tool for investigating persistent hyperbilirubinemia.
Main Methods:
- Seventy-seven infants (5 days to 6 months) with persistent hyperbilirubinemia underwent various investigations including laboratory tests, ultrasound, hepatobiliary scintigraphy, and, when indicated, liver biopsy, explorative laparotomy, and cholangiography.
- Hepatobiliary scintigraphy findings, such as gallbladder visualization and bowel activity, were analyzed.
- Liver morphology on scintigraphy was also considered as a distinguishing feature.
Main Results:
- Hepatobiliary scintigraphy correctly identified biliary atresia in 31 out of 34 infants, with only 3 false positives compared to cholangiogram and biopsy.
- Five cases were diagnosed with biliary hypoplasia.
- Distinctive liver shapes were observed between the two conditions on scintigraphy.
Conclusions:
- Hepatobiliary scintigraphy is a valuable, simple, and noninvasive method for differentiating biliary atresia from biliary hypoplasia in infants presenting with persistent hyperbilirubinemia.
- The technique offers a reliable diagnostic approach, aiding in the management of pediatric cholestatic jaundice.
Abstract:
The aim of this work is to see whether distinction between biliary atresia and biliary hypoplasia is possible or not and to present the value and usefulness of hepatobiliary scintigraphy in the investigation of infants with persistent hyperbilirubinemia. Seventy-seven patients of the age between five days and six months (average 62 days), 43 females and 34 males of which 65 Saudi, and 12 non-Saudis were investigated. Laboratory tests, abdominal ultrasound, hepatobiliary scintigraphy, liver biopsy, explorative laparatomy and intraoperative cholangiography were performed whenever indicated. The findings on hepatobiliary scintigraphy of nonvisualization of the gallbladder and no activity in the bowel upto 24 hours post injection were considered consistent with the diagnosis of biliary atresia. Minimal bowel activity, or visualization of the gallbladder where consistent with biliary hypoplasia. In addition, the liver in the two entities appeared in a different shape and can be used as an additional distinctive feature. Thirty-four infants were diagnosed by hepatobiliary scintigraphy as having biliary atresia. Only 3 of the 34 were false positives as compared to cholangiogram and liver biopsy results. Five cases were biliary hypoplasia. Hepatobiliary scintigraphy in infants with persistent hyperbilirubinemia can be distinguished between BA and BH in a simple and noninvasive approach.
