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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Gallbladder perforation. The gallbladder is distended, with irregular thickening of the walls. Multiple pericholecystic collections are shown (calipers) (a,b). Biliary sludge can be seen within the gallbladder lumen (a).