Yuichi Yamashita

TL;DR: It was judged that the severity assessment criteria of TG07 could be applied in the updated Tokyo Guidelines (TG13) with minor changes, and TG13 presents new standards for the diagnosis, severity grading and management of acute cholecystitis.

TL;DR: Variations in treatment and risk factors influencing the mortality rates indicate the necessity for standardized diagnostic, treatment, and severity assessment criteria on acute cholecystitis and cholangitis.

TL;DR: The proposed criteria have been adopted as new diagnostic criteria for acute cholecystitis and are referred to as the 2013 Tokyo Guidelines (TG13) with minor changes.

TL;DR: The final draft of the updated Tokyo Guidelines (TG13) improved the diagnostic sensitivity for acute cholangitis and cholecystitis, and presented criteria with extremely low false positive rates adapted for clinical practice.

TL;DR: The severity assessment criteria of TG13 have been revised so as not to lose the timing of biliary drainage or treatment for etiology, and the diagnostic criteria of the updated Tokyo Guidelines have high sensitivity and specificity.