Lymphoproliferative disorders associated with carbamazepine
W E Katzin1, C J Julius, R R Tubbs
1Department of Pathology, Mount Sinai Medical Center, Cleveland, Ohio.
Archives of Pathology & Laboratory Medicine
|December 1, 1990
Summary
Carbamazepine can rarely cause a condition mimicking lymphoma. This case highlights a T-cell immunoblastic lymphoma-like reaction that resolved after drug withdrawal, suggesting pseudolymphoma.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- Lymphoproliferative disorders are rare adverse effects of carbamazepine.
- Carbamazepine is an anticonvulsant and mood-stabilizing medication.
Observation:
- A 32-year-old woman presented with cervical lymphadenopathy during carbamazepine treatment.
- Lymph node biopsy revealed pleomorphic immunoblasts effacing nodal architecture.
- Immunohistochemistry showed a T-cell immunoblastic phenotype (CD3+, CD2+, CD5+, CD4+).
Findings:
- Initial diagnosis was high-grade, T-cell immunoblastic non-Hodgkin's lymphoma.
- The patient showed remarkable improvement and remained disease-free for 33 months after carbamazepine cessation.
- No chemotherapy was required, indicating a non-aggressive course.
Implications:
- This case suggests carbamazepine can induce a pseudolymphoma, a reactive condition mimicking lymphoma.
- Discontinuation of carbamazepine may be sufficient for resolution of drug-induced pseudolymphoma.
- Distinguishing pseudolymphoma from true lymphoma is crucial for appropriate patient management and avoiding unnecessary treatment.
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