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GBS w/ GB edema

GBS w/o GB edema/GB edema w/o GBS

No GBS/GB edema

HIDA scan

Consider evaluation for alternate diagnosis of abdominal pain

GB opacity not visualized

GB opacity visualized

Diagnostic criteria: ❑ Local symptoms & signs ❑ Murphy’s sign ❑ Pain or tenderness in RUQ ❑ Mass in RUQ ❑ Systemic signs ❑ Fever ❑ Leukocytosis ❑ Elevated CRP ❑ Imaging findings ❑ TAUSG ❑ HIDA scan

CT abdomen

Acute calculous cholecystitis w/ or w/o complications

Consider evaluation for alternate diagnosis like choledocholithiasis & cholangitis

Diagnostic criteria: ❑ Acute abdominal pain ❑ Fever ❑ Leukocytosis ❑ Abnormal liver function tets ❑ Imaging based criteria ❑ TAUSG based ❑ HIDA scan based ❑ CT based criteria

Suspect acute acalculous cholecystitis