Abstract

Calciphylaxis, also known as calcific uremic arteriolopathy, is a devastating systemic disease most commonly associated with chronic kidney failure. Its hallmark histopathologic features of small-vessel calcification, intimal hyperplasia, and microthrombi lead to microvascular occlusion and tissue necrosis. Clinically, it typically presents with painful cutaneous lesions that may be distal or proximal, with proximal lesions associated with higher mortality. Visceral involvement in this disease process is rare and in such case reports, all patients have coincident active cutaneous lesions. We present a case of a man in his 40s receiving hemodialysis presenting with mesenteric calciphylaxis complicated by ischemic colitis without active cutaneous lesions. Treatment consisted of sodium thiosulfate, vitamin K, and surgical resection. He previously had penile calciphylaxis treated with 3 months of sodium thiosulfate therapy and optimization of his serum calcium, phosphate, and parathyroid hormone levels. His penile calciphylaxis healed 12 months before his presentation with mesenteric calciphylaxis. This is the first known case report of isolated mesenteric calciphylaxis. It raises a number of clinical dilemmas, including duration of sodium thiosulfate use, monitoring for disease activity, and suitability for future kidney transplantation.

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