السبت، 4 فبراير 2012

Bile Duct Tumors

Tumors of the biliary tract (see image below) are uncommon but serious problems. The spectrum of lesions ranges from benign tumors, such as adenomas, to malignant lesions, such as adenocarcinomas. This discussion excludes tumors of the gallbladder, which are discussed separately.
Distal common bile duct tumor excised by radical pDistal common bile duct tumor excised by radical pancreaticoduodenectomy. The tumor measured 1.2 cm in diameter.
Most patients with bile duct tumors present with jaundice due to obstruction of the biliary tree by the tumor. Because the tumors are generally small, standard imaging studies, such as ultrasonography[1] and computed tomography (CT) scanning, may fail to show the lesion. These techniques may, however, provide a clue to the level of the obstruction and help exclude metastatic disease.
Cholangiography via a transhepatic or endoscopic approach is required to define the biliary anatomy and extent of the lesion. Magnetic resonance cholangiography is a noninvasive alternative available in an increasing number of centers.
The anticipated course of most cases of bile duct tumors includes recurrent biliary obstruction with infectious complications, local spread, and death in 6-12 months. Treatment depends on the site and extent of the lesion, and surgical resection improves survival and prognosis.

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