Granulomatous pyoderma gangrenosum in a patient with ulcerative colitis
2020
A 34-year-old woman with a past history of inflammatory bowel disease developed a painful elevated edematous swelling with ulcerations on the dorsum of her left foot. Histopathological examination revealed dense infiltration of neutrophils and mononuclear cells in the lower dermis and subcutaneous tissue. Tumor necrosis factor (TNF) was strongly detected in giant cells. To date, only a few cases of pyoderma gangrenosum with granulomatous changes have been reported. Tumor necrosis factor may have played a role in the granulomatous reaction in our case.
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