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Secondary ocular involvement in systemic "memory" B-cell lymphocytic leukemia.
S E Coupland1, H D Foss, N E Bechrakis
1Department of Pathology, University Hospital Benjamin Franklin, Freie Universität, Berlin, Germany. secoupland@yahoo.de
Ophthalmology
|June 27, 2001
Summary
This case report details a patient with memory B-cell chronic lymphocytic leukemia (B-CLL) who developed ocular adnexal involvement 16 years after diagnosis. Somatic mutation analysis of the immunoglobulin heavy chain gene confirmed the "memory" subtype, suggesting a less aggressive disease course.
Area of Science:
- Oncology
- Ophthalmology
- Immunogenetics
Background:
- B-cell chronic lymphocytic leukemia (B-CLL) is classified into "naive" and "memory" subtypes based on immunoglobulin heavy chain (IgH) gene mutations.
- Ocular and ocular adnexal involvement can occur in B-CLL patients during disease progression.
Observation:
- A case report detailing a patient with systemic B-CLL who presented with intraocular and ocular adnexal manifestations.
- Histopathologic, immunophenotypic, and molecular analyses were performed on bone marrow, conjunctival biopsies, and an enucleated eye.
Findings:
- Tumor manifestations across all specimens showed consistent morphologic and immunophenotypic characteristics of B-CLL.
- Molecular analysis confirmed that the B-CLL infiltrates originated from a single clone with eight somatic mutations in the IgH variable region, classifying it as "memory" B-CLL.
- Ocular involvement occurred 16 years after the initial B-CLL diagnosis.
Implications:
- "Memory" B-CLL may follow a less aggressive clinical course compared to "naive" B-CLL, as suggested by the late onset of ocular manifestations.
- Somatic mutation analysis of the IgH variable region in B-CLL is recommended for routine staging to predict clinical course and guide therapeutic strategies.