Percutaneous transhepatic cholangiogram (PTCA)
Normal values:
The bile ducts are normal for the age of the patient.
What abnormal results mean:
The results may show ducts that are dilated which may indicate there is an obstruction. The obstruction may be caused by stones, or cancer in the biliary (liver secretion) tract or pancreas.
Additional conditions under which the test may be performed:
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