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Immunoblastic lymphadenopathy in a five-month-old girl: successful treatment with immunosuppressants
M Hirose1, T Sano, Y Takahashi
1Division of Blood Transfusion, School of Medicine, University of Tokushima.
Insights
This study details a rare case of immunoblastic lymphadenopathy (IBL) in an infant, highlighting varied treatment responses. Immunosuppressants showed promise in managing this aggressive condition, warranting further investigation.
Area of Science:
- Pediatric Hematology
- Immunopathology
- Oncology
Background:
- Immunoblastic lymphadenopathy (IBL) is a rare condition characterized by lymph node abnormalities.
- Early diagnosis and understanding of IBL pathogenesis are crucial for effective treatment.
Observation:
- A five-month-old infant presented with fever, erythema, hepatosplenomegaly, and generalized lymphadenopathy.
- Lymph node biopsy revealed effaced architecture with immunoblasts, plasmacytoid cells, and lymphocytes, consistent with IBL.
- Elevated inflammatory markers including C-reactive protein and serum ferritin were noted.
Findings:
- Initial treatment with alpha-interferon showed efficacy, but relapse occurred.
- Subsequent treatment with cyclosporin A (CyA) and combination regimens including deoxyspagarin and azathioprine achieved disease control.
- An alternating regimen of 6-mercaptopurine, cyclophosphamide, and methotrexate maintained complete remission for 12 months.
Implications:
- This case suggests a potential role for various immunosuppressive agents in managing IBL.
- The effectiveness of different treatment modalities warrants further clinical investigation.
- Understanding the immunobiology of IBL is essential for developing targeted therapies.
Abstract:
A five-month-old girl developed high fever, erythema, hepatosplenomegaly and generalized lymphadenopathy. Laboratory examinations revealed elevated peripheral leukocyte counts, C-reactive protein, lactate dehydrogenase and serum ferritin level. Pathologic examination of the lymph nodes revealed immunoblastic lymphadenopathy (IBL) on the basis of the complete effacement of the normal architecture, replacement by a diffuse infiltrate composed of immunoblasts, plasmacytoid cells and small lymphocytes, and an abortive proliferation of blood vessels. B-cells and T-cells were nearly equally mixed throughout the lymph nodes. No rearrangements of the B-cell immunoglobulin and T-cell receptor genes were detected. The patient was initially treated with alpha-interferon with dramatic efficacy. After relapse, however, the disease was well controlled with cyclosporin A (CyA) and subsequently with combination regimens of CyA, deoxyspagarin and azathioprine with fair success. An alternating regimen of 6-mercaptopurine, cyclophosphamide and methotrexate was then instituted which continued the complete remission for 12 months. The effects of immunosuppressants in the treatment of IBL merit investigation.