Figure legends 
Figure 1 – Abdominal radiograph in seated position shows gastric distension with air-fluid level (asterix), pneumobilia (arrow) and an ectopic calcified gallstone in the lower right quadrant (arrowhead) – Rigler triad.
Figure 2 - Coronal image of contrast-enhanced abdominal CT shows marked gastric stasis and distension conditioned by a gallstone (arrowhead) in the level D3 of duodenum and the cholecystoduodenal fistula (arrow). CT also depict pneumatosis of the gastric wall (open arrowhead) and associated pneumoportia (open arrow), suggesting ischemia due to acute massive distension.