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The extra-digestive manifestations of chronic inflammatory bowel disease most often affect the joints, skin, eyes, liver and bile ducts. Renal involvement is rare, and manifests as kidney stones, glomerulonephritis, tubulointerstitial nephritis, and AA-type secondary amyloidosis. In this context of chronic inflammatory bowel disease, in particular ulcerative colitis, renal involvement is very often secondary to nephrotoxicity of the basic treatment of digestive pathology, and very rarely an authentic extra-digestive manifestation of intestinal disease. We report a case of IgA nephropathy as an extra-digestive manifestation of ulcerative colitis.
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S Boulajaad (2021) studied this question.
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