fig1

Figure 1. Intraoperative grades: Grade 1: Thin wall, normal-appearing gallbladder, no adhesions (Top left). Grade 2: Mildly abnormal-appearing GB (slightly thick-walled or distended) And/or thin-filmy GB adhesions (Top right). Grade 3: Moderately abnormal appearing GB (thick-walled, oedematous, with mucocele, or large distended gallbladder. And/or overlying moderate adhesions (Bottom left). Grade 4: Severely inflamed or grossly abnormal-appearing GB (e.g., necrotic or perforated). And/or extensive dense adhesions (Bottom right).