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Massive pulmonary hemorrhage in mixed connective tissue diseases
J Sanchez-Guerrero1, G Cesarman, D Alarcón-Segovia
1Department of Immunology and Rheumatology, Instituto Nacional de la Nutrición, Salvador Zubirán, Mexico City, Mexico.
The Journal of Rheumatology
|August 1, 1989
Summary
Mixed connective tissue disease (MCTD) can cause sudden, fatal pulmonary hemorrhage and renal vasculitis. Early recognition of this rare complication is crucial for timely diagnosis and potential intervention in patients with MCTD.
Area of Science:
- Rheumatology
- Pulmonology
- Nephrology
Background:
- Mixed connective tissue disease (MCTD) is a rare autoimmune disorder with overlapping features of systemic lupus erythematosus, scleroderma, and polymyositis.
- Pulmonary complications, though reported in MCTD, are not fully characterized.
Observation:
- A patient with known MCTD presented with acute pulmonary distress and bilateral infiltrates.
- The patient experienced rapid deterioration, succumbing within 24 hours.
Findings:
- Necropsy revealed massive alveolar hemorrhage as the cause of pulmonary distress.
- Renal necrotizing vasculitis and immune complex deposits in glomeruli were also identified.
- Only one prior case of MCTD with pulmonary hemorrhage was documented in the literature.
Implications:
- Pulmonary hemorrhage is a critical, potentially fatal complication of MCTD.
- Early identification of this severe manifestation may improve patient outcomes.
- This case highlights the importance of considering pulmonary hemorrhage in MCTD patients presenting with respiratory failure.