Ascending retrocecal appendicitis presenting with right upper abdominal pain: Utility of computed tomography

Figure 3 A 34-year-old man with colicky right flank pain and clinical diagnosis of right ureteric colic. A: Ultrasound showed a subhepatic fluid collection (arrows) and no other significant abnormality; B: CT scan performed 2 d later showed the collection in the subhepatic region (short arrow). Note the air-fluid level in the anterior collection (long arrow) with inflammatory changes; C: The section at the level of the cecum and appendix shows inflammatory changes in the retrocecal region (short arrow) and thickened appendix (long arrow).