cases, gallbladder Week 461: Case 1 April 26, 2023 pathadmin 1. Presented by Ralph Hruban, M.D. and prepared by Shiyama Mudali, M.D.This elderly patient was diagnosed with cholelithiasis and cholecystitis. A cholecystectomy was performed.Xanthogranulomatous cholecystitisMesenchymal fibrosarcoma of the gallbladderMetastatic melanomaPigmented nerve sheath tumor 1. Presented by Ralph Hruban, M.D. and prepared by Shiyama Mudali, M.D.This elderly patient was diagnosed with cholelithiasis and cholecystitis. A cholecystectomy was performed.