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by the American Institute of Ultrasound in Medicine J Ultrasound Med 2:13-16 0278-4297 Choledocholithiasis: Ultrasonographic CaveatsDepartment of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston. Address correspondence and reprint requests to Dr. Mueller, Department of Radiology, Massachusetts General Hospital, Boston. MA 02114.
Abstract Choledocholithiasis is a frequent cause of biliary obstruction; its ultrasonographic appearance has been well described. Familiarity with other causes of echogenic foci in the common duct will help prevent sonographic false-positive diagnoses of Choledocholithiasis. In patients who have had surgery or biliary manipulation, radiographic examination of the kidney, ureter, and bladder is helpful.
Key Words: Choledocholithiasis biliary obstruction
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