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Low-titer cold agglutinin disease with systemic sclerosis
Miki Oshima1, Hiroyuki Maeda, Keiko Morimoto
1Department of Respiratory Medicine and Rheumatology, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima 734-8530.
Internal Medicine (Tokyo, Japan)
|March 10, 2004
Summary
Systemic sclerosis (SSc) can trigger autoimmune hemolytic anemia, specifically cold agglutinin disease. Prompt diagnosis and treatment with prednisolone effectively managed anemia in this patient with SSc.
Area of Science:
- Rheumatology
- Hematology
- Immunology
Background:
- Systemic sclerosis (SSc) is a chronic autoimmune disease characterized by fibrosis of the skin and internal organs.
- Autoimmune hemolytic anemia (AIHA) is a condition where the immune system mistakenly attacks red blood cells.
- Cold agglutinin disease (CAD) is a form of AIHA mediated by cold-reactive antibodies.
Observation:
- A 60-year-old woman with SSc presented with severe anemia and Raynaud's phenomenon.
- Laboratory findings included positive direct Coomb's tests, low haptoglobin, anti-nuclear antibodies, anti-topoisomerase antibody, cold agglutinins, and low complement levels (IgM, C3, C4, CH50).
- Bone marrow aspiration revealed erythropoietic hyperplasia.
Findings:
- The patient was diagnosed with low-titer cold agglutinin disease secondary to SSc.
- Autoimmune hemolysis was confirmed as the cause of anemia.
- Erythropoietic system showed compensatory hyperplasia in response to hemolysis.
Implications:
- This case highlights the significant association between systemic rheumatic diseases like SSc and autoimmune hematological disorders.
- It underscores the importance of considering autoimmune hemolysis in SSc patients presenting with anemia.
- Early diagnosis and immunosuppressive therapy, such as with prednisolone, can effectively manage AIHA in the context of SSc.