Cholesterol gallstones
Mechanical manipulation during laparoscopic cholecystectomy has caused fragmentation of several yellow cholesterol gallstones, the interiors are black because of entrapped bile pigments. Note the faceted outlines. The gallbladder mucosa is reddened and irregular as a result of coexistent acute and chronic cholecystitis.Pigmented gallstones
Several faceted black gallstones are present in the gallbladder from a person with a mechanical mitral valve prosthesis, leading to chronic intravascular hemolysis.Acute cholecystitis
The mucosa has a characteristic "angry red" color. Note the marked edema of the wall and the serosal hyperemia. (normally the wall is paper-thinAcute cholecystitis showing extensive ulceration, hemorrhage, and edema & inflammation
Acute cholecystitisThere is thickening of the wall. The gallbladder is of normal size but it may be contracted, or enlarged. The mere presence of stones within the gallbladder, even in the absence of inflammation, is often taken as sufficient justification for the diagnosis.
Chronic cholecystitis with cholelithiasis