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Radiology. 1979 Dec;133(3 Pt 1):703-7.

Ultrasound evaluation of common bile duct size.

Abstract

A new sonographic technique for demonstration of the common bile duct is described in a prospective study of 200 patients. The mean diameter of the normal common duct was 4.1 mm. A common duct greater than 7 mm in diameter can be seen in (a) nonjaundiced patients with gallstones and/or pancreatitis, or (b) jaundiced patients with common duct obstruction by stone or tumor. A common duct greater than 11 mm in diameter is strongly suggestive of obstruction by stone or tumor.

PMID:
504652
DOI:
10.1148/133.3.703
[Indexed for MEDLINE]

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