Added value of ratio of cross diameters of the appendix in ultrasound diagnosis of acute appendicitis

Figure 2 Acute appendicitis. The images obtained using ultrasound from a 12-year-old female patient who presented with right inferior quadrant abdominal pain, tenderness of the abdominal wall, and abdominal guarding. A: On the longitudinal view, the appendix appears as a bent, blind-ending tubular structure extending from the cecum, the mural structures of the appendix are unclear, and there are heterogeneous complex echogenic fillings in the lumen; B: On the transverse view, the appendix appears as a round shape, with dilating lumen, there are heterogeneous complex echogenic fillings in the lumen, and the ratio of the cross diameters on the transverse section is 10/9.8 = 1.02. Postoperative histopathology confirmed that the patient had acute phlegmonous appendicitis.