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  • Title: Coombs-positive autoimmune hemolytic anemia in Crohn's disease.
    Author: Plikat K, Rogler G, Schölmerich J.
    Journal: Eur J Gastroenterol Hepatol; 2005 Jun; 17(6):661-6. PubMed ID: 15879729.
    Abstract:
    BACKGROUND: Anemia often occurs in patients with inflammatory bowel diseases. However, hemolytic anemia is a rare complication and is associated with Coombs-positive autoimmune disorders. There are several reports of autoimmune hemolytic anemia in patients with ulcerative colitis, whereas there are only four reports of this complication in patients with Crohn's disease. We report a case of a severe course Coombs-positive hemolytic anemia in a patient with Crohn's disease, which was refractory to medical treatment but resolved after subtotal colectomy. CASE REPORT: A 29-year-old patient was submitted to our clinic several times because of a severe course of inflammatory bowel disease and additionally a Coombs-positive autoimmune hemolytic anemia. Histology indicated severe Crohn's disease, but neither medical treatment with steroids, nor with methotrexate, cyclosporine or tumor necrosis factor-alpha antibody had been successful in resolving the intestinal inflammation and the hemolytic anemia. As colonoscopy revealed a pancolitis and dysplastic changes, even in the less inflamed areas of the colonic mucosa, subtotal colectomy was indicated. Half a year later we observed clinical and immunological signs of complete remission (no gastrointestinal symptoms, negative Coombs test). CONCLUSION: Autoimmune hemolytic anemia is a rare complication of inflammatory bowel disease and has been almost exclusively described in ulcerative colitis. The etiology is not yet completely understood. Presumably, the colon displays a role in the production of anti-erythrocyte antibodies. The therapy of choice in Crohn's associated hemolytic anemia is thought to be medical treatment with corticoid steroids. Some authors additionally prefer immunmodulators. However, in the case presented, colectomy (without splenectomy) was necessary to resolve refractory hemolysis and the severe course of Crohn's disease.
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