Presentation on theme: "DIAGNOSTIC ANCILLARY PROCEDURES AND FINDINGS RICCEL, VON AT EMAN."— Presentation transcript:
DIAGNOSTIC ANCILLARY PROCEDURES AND FINDINGS RICCEL, VON AT EMAN
ULTRASOUND – Ultrasound tests can show whether the liver or bile ducts are enlarged and whether tumors or cysts are blocking the flow of bile. Initial test of choice – Assess any abnormalities of the heptabiliary tract – It cannot be used to make a diagnosis of biliary atresia, but it does help rule out other common causes of jaundice Produces an image on a computer screen using sound waves.
Hepatobiliary scintigraphy Demonstrates bile duct patency using radionucleotide (DISIDA) A new diagnostic approach to biliary atresia with emphasis on the ultrasonographic triangular cord sign
LIVER SCANS HEPATOBILIARY IMINODIACETIC ACID (HIDA) SCANNING – Traces the path of bile in the body and can show whether bile flow is blocked – Infants with biliary atresia usually have normal uptake of the isotope but absent excretion into the biliary system and small intestine – Enhance isotope excretion with 5 days of pretreatment with phenobarbital
LIVER BIOPSY – It can help rule out other liver problems, such as hepatitis Recommended before surgical procedure Portal tract edema, fibrosis, inflammation, intracellular and canalicular cholestasis, proliferation of bile ductules
OPERATIVE CHOANGIOGRAPHY Gold standard for the diagnosis of BA If intact extrahepatic biliary system is not visualized,then extrahepatic biliary atresia is evident. If an intact biliary tree is visible, then perform an intraoperative cholangiogram – Cannulate the bile duct through transverse abdominal incision and inject contrast to determine if the biliary ducts are patent – At the porta hepatis there are microscopic bile ductules that have proliferated which communicate with the intrahepatic system
Correctable lesion – 20% – fibrosis of the distal biliary tree, however proximal biliary tree and intrahepatic bile ducts are patent Excise fibrotic area and direct drainage to bowel Non – correctable – 80% – Fibrosis to the level of the porta hepatis – Kasai procedure