A 6-year-old boy with one week history of abdominal pain and tenderness, leukocytosis, and free fluids around intestines in sonography. Axial CT image demonstrates the caecum (white arow) located in the epigastric area adjacent to the left lobe of the liver and gallbladder. The wall of the appendix is thickened, and an appendicolith (black arrow) is present in the proximal part of the appendix.