Table 1.

Diagnostic criteria of acute cholecystitis by the Tokyo guidelines 2013/2018

A. Local signs of inflammation etc.:

1. Murphy’s sign 2. Mass/pain/tenderness over the right upper quadrant (RUQ) of the abdomen

B. Systemic signs of inflammation etc.:

1. Elevated white blood cell (WBC) count 2. Elevated C-reactive protein (CRP) 3. Fever

C. Imaging findings

Suspected diagnosis: one item in A + one item in B

Definite diagnosis: one item in A + one item in B + C