BACKGROUND Acalculous cholecystitis is a rare form of gallbladder inflammation that occurs without the presence of gallstones. It primarily affects critically ill patients and warrants prompt treatment given its association with high mortality. Pericarditis, an inflammation of the pericardium, typically arises from viral infections but can also be secondary to rheumatological, malignant, or bacterial causes. The concurrent presentation of both these conditions is rare and should …