“The Effervescent Gallbladder”: A Rare Ultrasonographic Finding that Reflects the Presence of Gas within the Gallbladder

Abstract
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This article deals with the “effervescent gallbladder” [sủi bọt], a rare
ultrasonographic finding indicative of the presence of gas within the gallbladder. 3 cases are described and illustrated with photographs. Possible causes are reviewed and discussed.