By Peter H. Arger, Carol B. Benson, Edward I., M.D. Bluth, Peter, M.D. Arger, Carol Benson, Philip W. Ralls, Marilyn J. Siegel
This new textbook makes a speciality of the position of ultrasound and the workup of ordinarily encountered medical difficulties. Written through a distinctive te am of radiologists, it presents distinct insurance of the strengths and obstacles of grey scale, colour, and Doppler sonography, and contro versial components in ultrasound analysis. Chapters are divided into clin ical indicators, giving radiologists quick access to the knowledge they want. each one bankruptcy is observed by way of an in-depth research which incl udes a differential analysis, diagnostic workup, and the function of ultr asound should still play within the particular scientific challenge.
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Sample text
18 Mirizzi syndrome occurs when a large calculus in the neck of the gallbladder or cystic duct causes extrinsic mechanical compression on the common hepatic duct (Fig. 19 Alternatively, a calculus may occasionally be lodged within the cystic duct remnant. In these patients, there is intrahepatic bile duct dilatation with a common bile duct of normal size. In most cases, the insertion of the cystic duct into the common hepatic duct is relatively low. 19 In suspicious cases, carefully done computed tomography (CT) and especially cholangiography should be considered for diagnostic confirmation.
Am J Med 1989;86:539–546 9. Dolmatch BL, Laing FC, Federle MP, et al. AIDS-related cholangitis: radiographic findings in nine patients. Radiology 1987;163:313–316 10. Oikarinen H, Paakko E, Suramo I, et al. Imaging and estimation of the prognostic features of primary sclerosing cholangitis by ultrasonography and MR cholangiography. Acta Radiol 2001;42:403– 408 11. Narayanan Menon KV, Wiesner RH. Etiology and natural history of primary sclerosing cholangitis. J Hepatobiliary Pancreat Surg 1999;6:343–351 12.
2–7). In unusual cases, extrahepatic bile duct dilatation may be due to a congenital abnormality that results in a choledochal cyst. The pathogenesis for this condition is unknown, but it predominates among Asians and is more common among women (approximate ratio of 3:1). Various subtypes of these cysts result in either local cystic or, as is more common, aneurysmal dilatation of the extrahepatic bile duct (Fig. 2–8). Complications associated with a choledochal cyst include biliary obstruction, recurrent B A Figure 2–8 Choledochal cyst.