Percutaneous transhepatic cholangiogram
What is a Percutaneous Transhepatic Cholangiogram (PTC)?
A percutaneous transhepatic cholangiogram (PTC) is a minimally invasive imaging test used to view the bile ducts. It is used to diagnose problems with these ducts, including blockages and infections. A cystoscope or small flexible tube is inserted through the skin and advanced into the bile ducts of the liver. A special dye is injected to provide clear images of the bile ducts on X-ray.
Preparation for a PTC
In preparation for a PTC, your doctor will advise limiting liquids beforehand and having your bladder empty. A sedative may be recommended to help you relax and reduce discomfort during the procedure. You will also need to wear a hospital gown or loose-fitting clothing. In some cases, antibiotics may be prescribed to guard against the risk of infection.
PTC Procedure
During a PTC procedure, you will be made as comfortable as possible on the X-ray table. An anesthetic is usually administered and an ultrasound is used to help the doctor guide the catheter into the desired bile duct. The catheter is advanced through the skin and into the bile duct. As it is inserted, the catheter injects a special dye that is seen on X-ray. This dye helps to create clear, detailed images of the bile ducts.
Types of PTC
The two most common types of PTCs are percutaneous transhepatic cholangiography (PTC) and endoscopic retrograde cholangiopancreatography (ERCP). PTC involves inserting a catheter into the bile ducts via a skin incision. ERCP involves inserting a flexible endoscope into the mouth and down into the bile ducts to examine and repair any blockage or infection.
Risks of PTC
While PTC is considered a safe procedure, there can be some risks associated with it. This includes the risk of infection, bleeding, and damage to the bile duct. It is important to follow all the instructions given by healthcare providers before and after the procedure to minimize the risks.
Why is a PTC Performed?
A PTC is performed when a healthcare provider needs to view the bile ducts to diagnose or treat a condition affecting them. It can be used to examine biliary obstructions, cysts, tumors, and other conditions that can affect the bile ducts. A PTC is also used to inject medications or deliver other treatments to the bile ducts.
When is a PTC Performed?
A PTC is often ordered when other imaging tests, such as ultrasound or CT scans, cannot clearly identify the cause of bile duct problems. It may also be ordered if a doctor suspects an obstruction or infection in the bile ducts or to evaluate the success of minimally invasive treatments.
