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Spontaneous remission of B-cell chronic lymphocytic leukemia associated with T lymphocytic hyperplasia in bone marrow
Jefferson D Upshaw1, Thomas R Callihan
1Memphis Cancer Center, Tenn 38119, USA.
Insights
Spontaneous remission in B-cell chronic lymphocytic leukemia (B-CLL) is rare. This study details a patient
Area of Science:
- Hematology
- Immunology
- Oncology
Background:
- B-cell chronic lymphocytic leukemia (B-CLL) is a mature B-cell malignancy.
- Spontaneous remissions in B-CLL are exceptionally uncommon.
- Few cases undergo detailed immunophenotypic and genotypic analysis post-remission.
Observation:
- A patient achieving spontaneous remission from B-CLL was analyzed.
- Residual T-lymphocytic hyperplasia was noted in the bone marrow.
- Peripheral blood exhibited normal absolute CD4 and CD8 counts and CD4:CD8 ratio.
Findings:
- Flow cytometry confirmed the absence of B-CLL cells in peripheral blood.
- Bone marrow analysis showed less than 2% B-CLL cells.
- Immunophenotyping revealed a normal CD4:CD8 ratio in the residual T-lymphocytic population.
Implications:
- This case provides valuable immunophenotypic data on a rare spontaneous B-CLL remission.
- Understanding residual immune cell dynamics post-remission is crucial.
- Further research into mechanisms of spontaneous B-CLL remission is warranted.
Abstract:
Spontaneous remissions in B-cell chronic lymphocytic leukemia (B-CLL) are rare and none of them has been studied with immunophenotyping (by flow cytometry and immunohistochemistry) and genotyping. In this patient, studied after spontaneous remission had occurred, there was a residual T-lymphocytic hyperplasia in the bone marrow with a normal CD4:CD8 ratio. Absolute CD4 and CD8 counts and CD4:CD8 ratio in the peripheral blood were normal. Flow cytometry revealed no B-CLL cells in the peripheral blood and less than 2% B-CLL cells in the bone marrow.
