In 15 patients, the biliary dilatation seen on CT or US scan was not seen on subsequent MRCP. The rate of this discrepancy was similar in the normal- and abnormal-liver-function groups (21.2% and 23.8%, respectively; p = 0.652). Interobserver variance (in the definition of normal CBD width and in location of the measurement) and intermodality New Page 2 - Stritch School of Medicine CT scan: CT may be particularly useful in patients who are not jaundiced, and in those in whom intestinal gas interferes with US. CT may reveal bile and pancreatic duct dilation, a mass lesion within the pancreas, and evidence of extra pancreatic spread including liver or lymph node metastases and ascites thus useful for staging. Biliary dilatation in a 67-year-old woman: seeing is believing | Magnetic resonance cholangiopancreatography showed cystic dilatation of the common bile duct (CBD), intrahepatic and extrahepatic bile duct dilatation and suspicious intrahepatic bile duct stones . CT scan showed intrahepatic and extrahepatic bile duct dilatation and multiple intrahepatic bile duct stones . Etiological Causes of Intrahepatic and Extrahepatic Bile Duct For more than 60 causes of intrahepatic and extrahepatic bile duct dilatation listed in this paper, they can be divided into the congenital and acquired categories. The latter category can further be sub-classified according to the pathogenesis, relationship with bile duct wall or intrabiliary ductal pressure. ACKNOWLEDGMENT
Role of CT and MRCP in Evaluation of Biliary Tract Obstruction
etiology. For instance it may be necessary to use CT-scan, endoscopic retrograde consequently cause biliary stasis and dilatation of the CBD. (3 6). dominal ultrasound [TU], computed tomography scans. [CT], magnetic resonance rience significant CBD dilatation post cholecystectomy. (4). Subsequently dalities, such as ultrasound, CT, MR imaging with/ demonstrates an intraluminal mass lesion in the mid-CBD (arrow) with diffuse dilatation of the upstream bile. 13 Mar 2013 Little is known about the time course of dilatation of the common bile B, Frontal CT section showing dilatated CBD (5.95 mm) 4 hours after
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atation,” “p duct dilatation,” or “MPD dilatation” appear in their CT report was collected through a text search function in our PACS. A total of 11,170 patients were identified. The following patients were then excluded: 9095 patients for whom the phrase “no or without pancreatic duct dilatation,” Causes of common bile duct dilation - Doctor answers Helpful, trusted answers from doctors: Dr. Sawyer on causes of common bile duct dilation: I believe that the ductal findings are nonspecific. Sludge in the gall bladder can cause abdominal distress and indigestion. A gastroenterologist would sit down with the radiologist and review the images and decide whether more imaging studies like an MRI or liver biopsy are advisable depending upon your Differential Diagnosis of Intrahepatic Bile Duct Dilatation In the current report, we present 24 patients with intrahepatic bile duct dilation and no mass lesion demonstrated on US or CT who underwent resectional treatment under the diagnosis of presumed Chronic Extrahepatic Bile Duct Dilatation: Sonographic Screening
If the extrahepatic bile duct diameter is less than 5 mm, CBD stones are exceedingly rare, whereas a diameter greater than 10 mm with jaundice predicts CBD stones in more than 90% of cases (Abboud et al, 1996). Axial CT scans have better sensitivity (84%) for choledocholithiasis than US (see Chapter 16).
The incidence of common bile duct stricture (CBDS) in chronic pancreatitis CT scan showing pancreatic calcification and common bile duct dilatation (arrow). literature in 1935 reported dilatation of the common bile duct Computed tomography coronal reformat demonstrates slightly dilated duct (dashed arrow). While biliary dilatation is most often picked up on sonography, CT and MRI are two Dilatation at the level of common hepatic &/or common bile duct (Fig. Find out about bile duct cancer, also called cholangiocarcinoma, including what the symptoms are, how it's treated and what the outlook is.