Ultrasonography of normal and abnormal appendix in children

Figure 5 A 4-year-old female with acute colitis. A: Diffuse thickening of the colonic wall including cecum (arrows) was seen; B: Appendix (cursors) was also swollen with a maximal outer diameter of 7.8 mm and mildly increased echogenicity of periappendiceal mesenteric fat, which led to the misdiagnosis of acute appendicitis; C: The lymphoid follicles within the Peyer’s patches show granulomas with microabscesses (× 100, H-E stain), suggestive of yersiniosis.