Post-infectious acute renal failure due to calciphylaxis--when processes go the wrong way round

Area of Science:

• Nephrology
• Dermatology
• Pathology

Background:

• Calciphylaxis is a rare, life-threatening condition characterized by calcification of small and medium-sized blood vessels, leading to skin necrosis.
• It is most commonly observed in patients with end-stage renal disease (ESRD) on dialysis or post-renal transplantation, hence its alternative name, calcific uremic arteriolopathy.
• The exact pathogenesis of calciphylaxis remains uncertain.

Observation:

• This report details a unique case of calciphylaxis in a patient with alcoholic cirrhosis and preserved renal function.
• The patient presented with infected cutaneous lesions, a hallmark of calciphylaxis.
• These lesions subsequently triggered an acute post-infectious glomerulonephritis with extra-capillary proliferation.

Findings:

• The study identifies a novel association between alcoholic cirrhosis with normal renal function and the development of calciphylaxis.
• It demonstrates that calciphylaxis can occur in the absence of end-stage renal disease.
• The case illustrates a secondary complication of calciphylaxis, namely acute post-infectious glomerulonephritis.

Implications:

• This case expands the known clinical spectrum of calciphylaxis, suggesting that conditions other than ESRD can predispose individuals to this disorder.
• It underscores the importance of considering calciphylaxis in patients with unexplained skin necrosis, even with normal kidney function.
• The findings may prompt further research into alternative risk factors and pathogenic mechanisms of calciphylaxis and its potential renal complications.