We report two cases of systemic lupus erythematosus (SLE) complicated with colonic ulcerations. One patient was successfully cured by steroid therapy, while the other did not respond to steroid but oral mesalazine was effective. Systemic lupus erythematosus is frequently accompanied by gastrointestinal symptoms, but colonic lesions are quite rare, and the regular treatment is not fixed yet. The high-dose steroidal regimen may be effective for microvasculitis, although it may increase the risk of perforated ulcer of the intestinal tract, which is a life-threatening complication. Further analysis of its outcomes, and establishment of the regular guideline for its treatment are expected.
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