<prompt> Focal and diffuse thickening of gallbladder wall with high amplitude reflections and comet tail artifacts on USG suggest the diagnosis ofXanthogranulomatous cholecysitisCarcinoma of gall bladderAdenomyomatosisCholesterolosis  <response>: Focal and diffuse thickening of gallbladder wall with comet tail artifact is characteristic of adenomyomatosis of the gallbladder. 