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<p><b>New page</b></p><div>[[File:Perkutan_transhepatische_Cholangiographie.jpg|thumb|Perkutan transhepatische Cholangiographie]] '''Cholangiography''' is a diagnostic imaging technique used to visualize the [[bile ducts]] within the [[liver]] to check for obstructions, diseases, or other abnormalities. This procedure can be performed using various methods, including [[Magnetic Resonance Imaging (MRI)]], [[Endoscopic Retrograde Cholangiopancreatography (ERCP)]], and [[Percutaneous Transhepatic Cholangiography (PTC)]]. Cholangiography is crucial in diagnosing and managing conditions such as [[gallstones]], [[cholangiocarcinoma]] (bile duct cancer), and [[biliary atresia]].<br />
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==Types of Cholangiography==<br />
Cholangiography can be divided into several types based on the technique used:<br />
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===Magnetic Resonance Cholangiopancreatography (MRCP)===<br />
MRCP is a non-invasive imaging technique that uses [[magnetic resonance imaging]] to produce detailed images of the bile ducts, [[pancreatic duct]], and [[gallbladder]]. MRCP is often used as a diagnostic tool for patients suspected of having biliary or pancreatic diseases.<br />
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===Endoscopic Retrograde Cholangiopancreatography (ERCP)===<br />
ERCP combines the use of [[endoscopy]] and [[fluoroscopy]] (a type of medical imaging that shows a continuous X-ray image on a monitor) to diagnose and treat conditions affecting the bile ducts and [[pancreas]]. During ERCP, a flexible tube with a camera on the end (endoscope) is inserted through the mouth, down the [[esophagus]], and into the [[stomach]] and [[duodenum]] to reach the bile and pancreatic ducts.<br />
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===Percutaneous Transhepatic Cholangiography (PTC)===<br />
PTC is an invasive procedure where a needle is inserted through the skin and liver to inject a contrast dye directly into the bile ducts. X-ray images are then taken to visualize the bile ducts. PTC is often used when ERCP is not possible.<br />
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==Indications==<br />
Cholangiography is indicated for the diagnosis and management of various biliary system conditions, including:<br />
* Detection of [[gallstones]] in the bile ducts<br />
* Evaluation of [[jaundice]]<br />
* Diagnosis of biliary strictures and leaks<br />
* Assessment of the bile ducts before or after [[gallbladder surgery]]<br />
* Diagnosis of [[cholangiocarcinoma]]<br />
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==Procedure==<br />
The specific procedure for cholangiography varies depending on the method used. Generally, it involves the administration of a contrast medium to enhance the visibility of the bile ducts, followed by imaging using MRI, X-rays, or endoscopy. The choice of technique depends on the patient's condition, the purpose of the examination, and the available facilities.<br />
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==Risks and Complications==<br />
While cholangiography is generally safe, it carries some risks and potential complications, especially with invasive techniques like ERCP and PTC. These may include:<br />
* Infection<br />
* Bleeding<br />
* Pancreatitis<br />
* Bile duct injury<br />
* Allergic reaction to contrast medium<br />
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==Conclusion==<br />
Cholangiography is a valuable diagnostic tool in the evaluation of biliary diseases. It helps in the accurate diagnosis and management of conditions affecting the bile ducts. The choice of cholangiography method depends on various factors, including the specific indications, patient's health status, and the potential risks and benefits of each procedure.<br />
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[[Category:Medical imaging]]<br />
[[Category:Hepatology]]<br />
[[Category:Gastroenterology]]</div>Prab