Normotensive scleroderma renal crisis with diffuse alveolar damage after corticosteroid therapy

Area of Science:

• Nephrology
• Pulmonology
• Rheumatology

Background:

• Systemic sclerosis is a complex autoimmune disease affecting multiple organs.
• Scleroderma renal crisis (SRC) is a serious complication, typically presenting with hypertension.
• Normotensive SRC is a less common variant, posing diagnostic and therapeutic challenges.

Purpose of the Study:

• To elucidate the pathological process of normotensive scleroderma renal crisis.
• To investigate the potential role of corticosteroid therapy in precipitating acute complications of systemic sclerosis.

Main Methods:

• Case report of a 68-year-old woman with systemic sclerosis.
• Detailed clinical course including development of acute respiratory failure, diffuse alveolar hemorrhage, and normotensive SRC.
• Review of treatment interventions (angiotensin-converting enzyme inhibitor, plasmapheresis) and their outcomes.
• Autopsy findings including diffuse alveolar damage and thrombotic micro-angiopathy.

Main Results:

• The patient developed acute respiratory failure and normotensive SRC shortly after starting corticosteroid therapy.
• Standard treatments for SRC, including ACE inhibitors and plasmapheresis, were ineffective.
• Autopsy revealed diffuse alveolar damage and thrombotic micro-angiopathy, consistent with severe systemic vasculopathy.

Conclusions:

• This case highlights the potential for corticosteroid therapy to precipitate severe complications in systemic sclerosis.
• The findings suggest a possible causative link between corticosteroid use and the development of normotensive SRC and diffuse alveolar hemorrhage.
• Understanding this sequence clarifies the pathology of normotensive SRC and its potential triggers.