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© 2002 by the American Institute of Ultrasound in Medicine
J Ultrasound Med 21:1417-1421 • 0278-4297

Case Series

Sonographic Detection of Gallbladder Duplication

Two Cases Discovered In Utero

Lisa L. Kinoshita, MD, Peter W. Callen, MD, Roy A. Filly, MD and Lyndon M. Hill, MD

Department of Radiology, University of California, San Francisco, California (L.L.K., P.W.C., R.A.F.); and Ultrasound Department, Magee-Womens Hospital, University of Pittsburgh Medical Center Health System, Pittsburgh, Pennsylvania (L.M.H.).

Address correspondence and reprint requests to Peter W. Callen, MD, Department of Radiology, University of California, San Francisco, 505 Parnassus Ave, Box 0628, San Francisco, CA 94143.

Objective. To report the in utero diagnosis of a duplicated gallbladder. Methods. Obstetric sonography was performed at 2 separate referral centers. A comprehensive level II examination was performed at each center. Results. In both cases, a duplicated gallbladder was detected in utero without the presence of other anatomic abnormalities. Conclusions. Gallbladder duplication, although uncommon, should be considered when an additional cystic structure is seen in the right upper quadrant. Recognition of the presence of a duplicated gallbladder, a relatively benign condition, prevents invoking a more serious diagnosis, such as a choledochal or duodenal duplication cyst.

Key Words: Boyden classification • fetal sonography • gallbladder duplication • gallbladder fossa • Y-type cystic duct duplication




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