Ultrasonography and computed tomography for diagnosis and follow-up of biliary duct @entity980 in XXXX .

@entity980 @entity1 @entity5 @entity146
The authors report eight cases of biliary duct @entity980 in @entity1 , examined by US and CT. There were five @entity1 and three @entity1 , aged 2 to 17 years. At presentation, US demonstrates the @entity5 mass within the liver or the hepatic hilum; it allows measurement of it and defines the relationship with portal vessels, biliary tract and other important structures. CT complements the US evaluation and determines operability. As US and CT cannot assess the histological origin of the @entity5 , a biopsy is mandatory before treatment. If complete surgical excision does not seem possible, percutaneous biopsy is preferable to incomplete excision and its possible complications. During the follow-up period, US can be repeated to measure @entity5 regression under chemotherapy. After surgery, CT seems preferable because of gas interposition. Both US and CT proved to be valuable for the early detection of local recurrence. The prognosis of these @entity5 remains bad. However, with more @entity146 and hopefully more efficient chemotherapy a precise evaluation of the @entity5 extension by US and CT is very important. Surgery will then be performed only on localized @entity5 or on residual masses after chemotherapy.
