Xanthogranulomatous cholecystitis shows overlapping histological features with IgG4‐related cholecystitis

Aims Xanthogranulomatous cholecystitis ( XGC ), an unusual histological variant of chronic cholecystitis, is characterised by mixed foamy histiocytic and lymphoplasmocytic infiltration and fibrosis. Radiologically, the poorly defined nodular growth pattern often leads to the misinterpretation of XGC as gallbladder cancer. In this study, we aimed to identify the relationship of XGC with IgG4‐related cholecystitis. Methods and results We...