Q: 29 year old female is admitted to ICU after severe uro-sepsis. Patient remained in ICU for a week and now recovering - but still on TPN as she was unable to tolerate enteral feed. Due to abnormal liver enzyme, resident ordered ultrasound of Right Upper Quadrant. Radiology called you with report that: Patient is displaying "champagne sign"? 



Answer: One of the ultrasonographic features suggestive of acalculous cholecystitis include emphysematous cholecystitis with gas bubbles arising in the fundus of the gallbladder, known as "champagne sign". It is considered as a specific sign for acalculous cholecystitis.