文摘
A wide variety of inflammatory and neoplastic processes may affect the gallbladder. Gallstones are commonly encountered, and can result in both acute and chronic cholecystitis. Advanced acute cholecystitis can lead to a variety of complications, each with unique imaging findings. Adenomyomatosis and xanthogranulomatous cholecystitis can result in gallbladder wall thickening which may mimic carcinoma. Polyps are frequently encountered and are typically benign. However, some imaging features of polyps are more suggestive of suspected carcinoma and necessitate surveillance or intervention. Gallbladder carcinoma usually presents as a subhepatic mass with liver invasion, generally portending a poor prognosis. Congenital anomalies, torsion, and traumatic injury are additional less-common entities that may affect the gallbladder. This article will describe the various diseases that affect the gallbladder and discuss the associated imaging appearances across multiple modalities.