Nonuremic Calciphylaxis: Four Cases Associated with Autoimmune Diseases

Area of Science:

• Nephrology
• Dermatology
• Rheumatology

Background:

• Calciphylaxis is a rare, severe syndrome of vascular calcification with poorly understood causes.
• While primarily affecting end-stage renal disease patients, calciphylaxis also occurs in nonuremic individuals.
• Ulcerated lesions are a significant manifestation of calciphylaxis.

Observation:

• This report details four nonuremic calciphylaxis cases presenting with ulcerated lesions.
• These patients had underlying autoimmune diseases, suggesting a potential link.

Findings:

• Bisphosphonates and sodium thiosulfate demonstrated therapeutic efficacy in these nonuremic calciphylaxis cases.
• Treatment effectiveness was observed irrespective of the patients' renal function status.

Implications:

• These findings expand the understanding of nonuremic calciphylaxis and its management.
• The study supports the use of bisphosphonates and sodium thiosulfate for calciphylaxis, even in patients without kidney disease.