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Gastroenterology. 1978 May;74(5 Pt 1):900-2.

Oral 25-hydroxyvitain D3 in treatment of osteomalacia associated with ileal resection and cholestyramine therapy.


Severe histological osteomalacia developed in a woman with Crohn's disease 2 years after ileal resection and the start of cholestyramine therapy. Treatment with oral 25-hydroxyvitamin D3, 50 microgram daily, produced marked biochemical, radiological, and histological improvement after 6 months. It is suggested that cholestyramine, by reducing vitamin D absorption, precipitated the rapid development of osteomalacia in this patient. This case report emphasizes the importance of routine vitamin D supplementation in all patients on long term cholestyramine therapy, and indicates that even in patients with small intestinal disease or resection, oral preparations of vitamin D or its metabolities and analogues may be effective.

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