[Conservative treatment of an aseptic abscess syndrome with splenic abscesses in Crohn's disease].

A 24-year old woman with a history of Crohn's disease developed bloody diarrhea and multiple abdominal abscesses, daily fever, leukocytosis, and elevated CRP several months after her immunosuppressive therapy with azathioprine was stopped. Recurrent abscess punctures did not detect any pathogenic germs and neither clinical nor serological response was achieved by administration of different antimicrobial therapies. Additionally, new splenic abscesses arose despite ongoing therapy. Under the suspicion of the rare aseptic abscess syndrome, representing an auto-inflammatory, extra-intestinal manifestation of Crohn's disease, the antimicrobial therapy was stopped and an intravenous therapy with prednisolone was initiated. As soon as therapeutic response was achieved, an additional anti-TNF therapy with Infliximab was started and subsequently the intraabdominal and splenic abscesses disappeared.The knowledge of the aseptic abscess syndrome, which is characterized by (a) sterile abscesses with neutrophilic granulocytes, (b) negative blood cultures, (c) lack of response to antimicrobial treatment, and (d) rapid clinical improvement after initiation of prednisolone therapy with subsequent response in imaging, may avoid unnecessary operations like splenectomy in the present case. The exact pathophysiology of the aseptic abscess syndrome is unknown but, with regard to the sterile aspirates, an auto-inflammatory cause has been suggested. Data of a French case collection demonstrate that this syndrome may be present more frequently than expected in patients with chronic inflammatory bowel diseases. Up to now, this syndrome has not been described in German literature.