Ultrasonography of normal and abnormal appendix in children

Figure 8 A 6-year-old male with acute appendicitis and fever. A: Distended appendix with dirty intraluminal fluid and hyperemia of appendiceal wall on color Doppler study (arrows). Periappendiceal mesenteric fat infiltration was identified; B: Because of lobar pneumonia, surgery was delayed and antibiotic therapy given. On follow-up ultrasonography 3 d later, the maximal outer diameter of appendix (arrows) was decreased to 4 mm with disappearance of intraluminal content; C: On follow-up after 6 d, the wall layers of the appendix (arrows) had recovered significantly. Periappendiceal mesenteric fat change had almost resolved.