Managing acute appendicitis during the COVID-19 pandemic in Jiaxing, China

Figure 6 Clinical images from simple group and complex group. A: Simple group; B: Complex group. Operative photo: A1: Thickened appendix (black arrow) with slightly swollen mesentery; B1: Thickened and congestive appendix (black arrow) with exudation. The distal end of appendix is necrosis with purplish black color. Abdominal computed tomography scan: A2: Slightly thickened appendix (orange arrow) with exudation; B2: Appendix is remarkably thickened and the boundary is obscure. Pathological section (× 40): A3: Structure of appendix remains. The whole layer of appendix indicates obvious infiltration of neutrophils; B3: Structure of appendix disappears. The whole layer of appendix shows hemorrhage and necrosis with infiltration of neutrophils.