Antibiotics
Ceftriaxone + metronidazole OR
Piperacillin/tazobactam
Cholecystectomy
Definitive therapy
Ceftriaxone + metronidazole OR
Piperacillin/tazobactam
Definitive therapy
Acalculous cholecystitis
Gallbladder disease
Acute calculous cholecystitis
Symptomatic cholelithiasis 
Choledocholithiasis
Ascending cholangitis
Acute cholecystitis
Symptomatic cholelithiasis