Mistaken identity: normotensive scleroderma renal crisis

Area of Science:

• Nephrology
• Rheumatology
• Internal Medicine

Background:

• A patient presented with complex multisystem symptoms including neuromuscular, respiratory, and cardiac issues.
• Initial diagnoses included amyotrophic lateral sclerosis (ALS), myocardial ischemia, and pneumonia, complicating the clinical picture.

Observation:

• The patient developed rapid, unexplained progressive kidney failure within a week.
• Kidney biopsy revealed thrombotic microangiopathy, a key finding for diagnosis.

Findings:

• The correct diagnosis was established as normotensive scleroderma renal crisis, a manifestation of systemic sclerosis.
• Treatment with an ACE inhibitor and hemodialysis led to significant functional recovery, though kidney failure persisted.

Implications:

• This case underscores the diagnostic challenges in complex systemic diseases.
• Highlights the critical role of kidney biopsy in identifying rare conditions like scleroderma renal crisis.
• Emphasizes the need for thorough clinical evaluation and diagnostic procedures for accurate patient management.