Percutaneous transhepatic cholangiography

Percutaneous transhepatic cholangiography
Percutaneous transhepatic cholangiography
Other names	Percutaneous hepatic cholangiogram
ICD-9-CM	87.51
OPS-301 code	3-13c.1
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Percutaneous transhepatic cholangiography, percutaneous hepatic cholangiogram, or percutaneous transhepatic cholangiography and drainage is a radiological technique used to visualize the anatomy of the biliary tract. A contrast medium is injected into a bile duct in the liver, after which X-rays are taken. It allows access to the biliary tree in cases where endoscopic retrograde cholangiopancreatography has been unsuccessful. Initially reported in 1937, the procedure became popular in 1952.^[1][2]

Technique[]

It is predominantly now performed as a therapeutic technique. There are less invasive means of imaging the biliary tree including transabdominal ultrasound, magnetic resonance cholangiopancreatography, computed tomography and endoscopic ultrasound. If the biliary system is obstructed, percutaneous transhepatic cholangiography may be used to perform biliary drainage until a more permanent solution for the obstruction is performed (e.g. surgery). Additionally, self expanding metal stents can be placed across malignant biliary strictures to allow palliative drainage. Percutaneous placement of metal stents can be utilised when therapeutic endoscopic retrograde cholangiopancreatography has been unsuccessful, anatomy is altered precluding endoscopic access to the duodenum, or where there has been separation of the segmental biliary drainage of the liver, allowing more selective placement of metal stents.^{[citation needed]}

Cholangiography during a biliary drainage intervention is called perioperative or primary choloangiography, and when performed later in the same drain it is called secondary cholangiography.^[3]

Indications[]

Cholestatic jaundice, to exclude extra hepatic bile duct obstruction, prior to biliary drainage procedure.^{[citation needed]}

If endoscopic retrograde cholangiopancreatography has failed and/or there is an obstruction in the proximal biliary tree.^{[citation needed]}

Contraindications[]

• Bleeding tendency
• Biliary tract sepsis
• Being unfit for surgery
• Hydatid cysts
• Ascites
• CLD (Chronic liver disease)

Complications[]

Percutaneous transhepatic cholangiography may increase the incidence of metastasis, tube dislocation, and bleeding when compared to endoscopic biliary drainage. However, it has lower rate of cholangitis, pancreatitis when compared to endoscopic biliary drainage, probably because the latter has higher chance of incomplete drainage of infected bile, or accidental resection of papilla that causes the backflow of infected bile from the duodenum into the biliary system.^[4][5]

References[]

External links[]

• MedlinePlus Encyclopedia: 003820
• Medline page

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