A case of rapidly progressive IgA nephropathy in a patient with exacerbation of Crohn’s disease
Open Access
- 6 August 2012
- journal article
- case report
- Published by Springer Science and Business Media LLC in BMC Nephrology
- Vol. 13 (1), 84
- https://doi.org/10.1186/1471-2369-13-84
Abstract
Background: IgA nephropathy has been reported as a renal involvement in Crohn’s disease. Crescentic IgA nephropathy, which accounts for fewer than 5% of cases of IgA nephropathy, has a poorer prognosis than other forms of crescentic glomerulonephritis. We recently experienced a case of rapidly progressive IgA nephropathy concurrent with exacerbation of Crohn’s disease.Case presentation: An 18-year-old male diagnosed with Crohn’s disease underwent a hemicolectomy 2 years prior previously. He had maintained a state of Crohn’s disease remission with 5-aminosalicylic acid treatment. Four months prior to referral to the nephrology clinic, he experienced non-bloody diarrhea. He simultaneously developed proteinuria and microscopic hematuria with deterioration of renal function. Based on renal biopsy findings, the patient was diagnosed with crescentic IgA nephropathy. Immunostaining for interleukin-17 in renal tissue and previous exacerbated colonic ulcers was positive. Steroid pulse therapy was administered, followed by high-dose glucocorticoid and oral cyclophosphamide therapy. The patient’s renal function recovered and his gastrointestinal symptoms were alleviated.Conclusions: We report a case of crescentic IgA nephropathy presenting with exacerbation of Crohn’s disease, and present a review of the literature focusing on the pathophysiologic relationship between these two conditions.Keywords
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