arrow=calculus.

arrow head=G.B.wall.

e=surrounding edema.

s=sludge.

Reference:BiblioMed Textbook-Computed Body Tomography

arrow=small calculi.

small arrow=edematous mucosa

surrounded by gall bladder wall edema.

mimiking a gall bladder mass.

Reference:BiblioMed Textbook-Computed Body Tomography

arrow head=diffuse thickening and edema of gall

bladder wall.

arrow=dilated common bile duct.

Reference:BiblioMed Textbook-Computed Body Tomography