Biliary Atresia - Symptoms and Diagnosis

Symptoms and Diagnosis

Initially, the symptoms are indistinguishable from neonatal jaundice, a common phenomenon. Symptoms are usually evident between one and six weeks after birth. Besides jaundice, other symptoms include clay colored stools, dark urine, swollen abdominal region and large hardened liver (which may or may not be observable by the naked eye). Prolonged jaundice that is resistant to photo therapy and/or exchange transfusions should prompt a search for secondary causes. By this time, liver enzymes are generally measured, and these tend to be grossly deranged, hyperbilirubinaemia is conjugated and therefore does not lead to kernicterus. Ultrasound investigation or other forms of imaging can confirm the diagnosis. Further testing includes radioactive scans of the liver and a liver biopsy.

Biliary atresia seems to affect girls slightly more often than boys. Within the same family, it is common for only one child in a pair of twins or only one child within the same family to have it. Asians and African-Americans are affected more frequently than Caucasians. There does not appear to be any link to medications or immunizations given immediately before or during pregnancy.

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