PMC8484880_01
Preoperative and postoperative visual field examinations of the patient. (a) The arrowed tissue was the appendix. (b) The arrowed tissue was an enlarged mesenteric lymph node in the ileocecal region. (c) The arrowed tissue was another enlarged lymph node which was not removed.
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F1
The normal appendix and swollen lymph nodes in dark red were found in the operative field (Figure 1).
Histopathological findings of lymph node biopsy. Lymph node sections showed partially preserved lymphoid architecture with lymphoid follicles and paracortical coagulative necrosis with karyorrhectic debris and apoptosis, absence of neutrophils, and presence of histiocytes and lymphoid cells. (H&E stain; (a) original magnification x40; (b), original magnification x100; (c), original magnification x200; (d), original magnification x400).
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F2
The pathological examination indicated almost normal appendix and necrotizing lymphadenitis (Figure 2).