Case 12. Yersinia colitis (10 y-o F)
    Ascending colon resected under the preoperative diagnosis of acute appendicitis, accompanying mesenteric nodal swelling    
Key words : 
Yersinia enterocolitica, colitis, suppurative granuloma, mesenteric lymphadenitis    
Granulomas formed in the thickened mucosa showing lymphoid hyperplasia (HE, low power)   Suppurative granuloma with central accumulation of neutrophils (HE, higher power)
Mesenteric lymphadenitis with suppurative granuloma formation (HE)