Abstract
We report three cases of Yersinia enteritis. Definite diagnosis was made by microbiologic confirmation of colonoscopically biopsied mucosal specimen. All cases presented low grade fever and intermittent abdominal pain with right lower quadrant tenderness. Only one case had watery diarrhea with fecal occult blood. Abdominal ultrasonography showed marked thickening of the terminal ileal wall and enlarged regional mesenteric lymph nodes, and normal appendix. Yersinia enteritis was suspected by clinical course and ultrasonographic findings. Colonoscopy revealed multiple small elevated lesions and irregular shallow ulcers covered with white coating in diffusely reddish and swollen mucosa of terminal ileum. Positive culture for Yersinia enterocolitica from mucosal biopsy specimen confirmed the diagnosis of Yersinia enteritis.
