Xanthogranulomatous cholecystitis: Diagnosis and management.

Xanthogranulomatous cholecystitis (XGC) is a rare form of cholecystitis, characterized by the presence of xanthogranuloma, prominent yellow structures within the gallbladder wall that is very often lithiasic. When XGC presents in its pseudo-tumoral form with occasional adjacent organ involvement, it can mimic gallbladder carcinoma (GBC). The etiopathogenesis of XGC is inflammatory destruction of Rokitansky-Aschoff sinuses containing biliary and cholesterol pigments within the gallbladder wall; this leads to a florid granulomatous histiocytic inflammatory reaction.