Haematological abnormalities in systemic sclerosis

Area of Science:

• Rheumatology
• Hematology

Background:

• Systemic sclerosis (SSc) is a heterogeneous connective tissue disease with variable organ involvement, disease course, and prognosis.
• Hematological disorders are uncommon in SSc compared to other systemic connective tissue diseases like systemic lupus erythematosus.
• When hematological abnormalities occur in SSc, they can impact erythrocytes, leucocytes, and platelets.

Purpose of the Study:

• To highlight the rare occurrence and types of hematological disorders in Systemic Sclerosis.
• To emphasize the importance of differential diagnosis in SSc patients presenting with severe hematological disturbances.
• To guide clinicians in considering overlapping connective tissue diseases or hematologic malignancies.

Main Methods:

• Review of literature on hematological manifestations in Systemic Sclerosis.
• Analysis of differential diagnostic considerations for SSc-associated hematological disorders.
• Focus on specific indicators like monoclonal proteins and cryoglobulins.

Main Results:

• The most frequent erythrocyte abnormality is microcytic anemia due to gastrointestinal micro-hemorrhages and telangiectasias.
• Severe hematological disturbances necessitate ruling out co-existing connective tissue diseases or lympho/myeloproliferative syndromes.
• Monoclonal proteins or cryoglobulins in SSc patients warrant consideration of hematologic malignancy, particularly paraneoplastic syndromes.

Conclusions:

• Hematological disorders, though rare, are significant in Systemic Sclerosis and require careful evaluation.
• Differential diagnosis is crucial, especially when severe hematological abnormalities arise, to distinguish from other systemic diseases or hematologic cancers.
• The presence of monoclonal proteins or cryoglobulins strongly suggests a potential hematologic malignancy or paraneoplastic syndrome in SSc patients.