The diagnostic criteria for acute cholecystitis have high sensitivity (91.2%) and specificity (96.9%) and good diagnostic yield; therefore, their use as the diagnostic criteria for acute cholecystitis is recommended.
TG18
TG18/TG13 Diagnostic Criteria for Acute Cholangitis
The diagnostic and severity grading criteria on the 2018 Tokyo Guidelines (TG18) are used worldwide as the primary standard for management of acute cholangitis (AC).