Stone-In-Neck Sign on Gallbladder POCUS This 40yo F presented with R flank pain. Here is her biliary PoCUS. A stone is lodged in the neck of the gallbladder (SIN sign). Patient was taken to surgery based on her symptoms & PoCUS. Pathology: acute cholecystitis Dr. Meghan Herbst @EUSmkh #Stone #Neck #SiN #Sign #POCUS #clinical #gallbladder #ultrasound #abdominal #labeled #cholelithiasis