[Systemic calciphylaxis and acquired perforating disease in a uremic patient]

Area of Science:

• Nephrology
• Dermatology
• Vascular Medicine

Background:

• Chronic renal failure (CRF) patients on hemodialysis often experience complications.
• Vascular calcification and secondary hyperparathyroidism are common in CRF.

Observation:

• A patient with CRF on hemodialysis presented with rapidly progressive ischemic necrosis of digits.
• Radiological and pathological findings revealed diffuse vascular calcifications.
• Elevated parathyroid hormone (PTH) and phosphocalcic product were noted.

Findings:

• Amputation was necessary due to ischemic necrosis.
• Following parathyroidectomy, initial improvement was followed by new ischemic lesions and keratotic papules on the buttocks and lower extremities.
• Histological examination showed perforation of these new lesions, leading to necrosis.

Implications:

• This case highlights the potential coexistence of acquired perforating disease and calciphylaxis in uremic patients.
• The findings suggest a complex interplay between mineral metabolism, vascular health, and skin manifestations in advanced kidney disease.
• Further research is warranted to understand and manage these severe complications in hemodialysis patients.