Fig. 1From: Cholecysto-pyloric fistula with submucosal impaction of gall stone causing gastric outlet obstruction masquerading as a gastric mass, Bouveret Syndrome: case reportA–C Contrast-enhanced computed tomography images in coronal (A), axial (B) and sagittal (C) sections showing submucosal impaction of gallstone (hypodense) with surrounding mucosal thickening (red arrow) at pylorus causing gastric outlet obstruction. D Axial CT images in lung window to show pneumobilia (blue arrow)Back to article page