Primary oxalosis with livedo reticularis

Area of Science:

• Nephrology
• Dermatology
• Pathology

Background:

• Primary oxalosis is a rare inherited metabolic disease characterized by excessive oxalate production.
• Renal failure is a common complication of primary oxalosis, often requiring renal replacement therapy.
• Livedo reticularis is a mottled, purplish discoloration of the skin, typically on the lower extremities.

Observation:

• A 37-year-old woman with primary oxalosis and end-stage renal disease on hemodialysis developed livedo reticularis.
• Skin biopsy of the affected areas revealed oxalate crystals within the dermal and subcutaneous blood vessel walls.

Findings:

• The presence of oxalate crystals in cutaneous blood vessels confirms vascular oxalosis.
• This finding establishes a direct link between oxalosis and the development of livedo reticularis.

Implications:

• Oxalosis with vascular involvement should be considered in the differential diagnosis of livedo reticularis, especially in patients with renal failure.
• This case underscores the systemic manifestations of primary oxalosis and the importance of recognizing its cutaneous signs.
• Further research may elucidate the precise mechanisms by which oxalate crystals induce vascular changes leading to livedo reticularis.