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A Case of Double Expresser Diffuse Large B Cell Lymphoma Treated with R-CODOX-M/R-IVAC
Thomas Bemis1, Jonathan Ioanitescu1, Lynn Mackovick2
1Drexel University College of Medicine, Department of Internal Medicine, Philadelphia, Pennsylvania, USA.
Abstract:
Diffuse Large B Cell Lymphoma (DLBCL) is a heterogeneous disease with a variety of chromosomal abnormalities contributing to differences in management. While it is known that Double Hit Lymphomas (DHL) warrant more aggressive chemotherapy regimens, debate remains on how to treat Double Expresser Lymphomas (DEL). We present a case of a DEL treated with an aggressive regimen of 2 alternating cycles of R-CODOX-M (rituximab, cyclophosphamide, doxorubicin, vincristine and methotrexate) and R-IVAC (rituximab, ifosfamide, etoposide and high dose cytarabine). The regimen resulted in a significant response to treatment with marked reduction in tumor size and avidity, and an acceptable side effect profile. There was, however, residual metabolic activity on repeat PET CT scan. After consolidation with 36 Grey radiotherapy, a PET CT demonstrated a complete metabolic response. Debate remains regarding treatment approaches in DEL. Our case supports the categorization of DEL alongside DHL as resistant lymphomas requiring a more aggressive regimen than standard therapy.
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