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Systemic polyclonal B-immunoblastic proliferation with marked peripheral blood and bone marrow plasmacytosis
E J Poje1, G S Soori, D D Weisenburger
1Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha 68198-3135.
American Journal of Clinical Pathology
|August 1, 1992
Summary
A rare benign B-immunoblastic proliferation, potentially linked to Pseudomonas aeruginosa septicemia, was observed. Prompt corticosteroid treatment led to full recovery, highlighting its distinction from lymphoma.
Area of Science:
- Immunology
- Hematology
- Pathology
Background:
- Acute systemic polyclonal B-immunoblastic proliferation is a rare condition.
- Distinguishing this entity from malignant neoplasms like non-Hodgkin's lymphoma is crucial for appropriate patient management.
Observation:
- A case presented with significant peripheral blood and bone marrow plasmacytosis.
- Hepatic portal areas showed infiltration by immunoblasts, plasma cells, and lymphocytes.
Findings:
- Clinical and laboratory data, along with long-term follow-up, supported a benign process.
- The condition was potentially associated with Pseudomonas aeruginosa septicemia.
- High-dose intravenous corticosteroids resulted in dramatic clinical recovery.
Implications:
- Pathologists must recognize this benign entity to avoid misdiagnosis as lymphoma or plasma cell dyscrasia.
- This case underscores the importance of considering benign reactive processes in the differential diagnosis of B-cell proliferations.
- Effective treatment with corticosteroids suggests a distinct pathophysiology amenable to immunomodulatory therapy.