High grade B-cell lymphoma

High-grade B-cell lymphoma is an aggressive, fast-growing hematologic malignancy arising from mature B lymphocytes within the lymphatic and hematopoietic systems, most frequently affecting older adults Classified under World Health Organization standards, the diagnostic entity encompasses high-grade neoplasms characterized by blastoid or intermediate cytological features between diffuse large B-cell lymphoma and Burkitt lymphoma Clinically, it typically presents with rapidly enlarging lymphadeno...

High-grade B-cell lymphoma is an aggressive, fast-growing hematologic malignancy arising from mature B lymphocytes within the lymphatic and hematopoietic systems, most frequently affecting older adults Clinically, it typically presents with rapidly enlarging lymphadenopathy, frequent extranodal organ involvement, elevated serum lactate dehydrogenase levels, constitutional B symptoms, and an inherently aggressive clinical course

Classified under World Health Organization standards, the diagnostic entity encompasses high-grade neoplasms characterized by blastoid or intermediate cytological features between diffuse large B-cell lymphoma and Burkitt lymphoma Key pathophysiologic subsets include tumors defined by cytogenetic "double-hit" or "triple-hit" rearrangements—most notably involving *MYC* alongside *BCL2* (and historically *BCL6*)—as well as high-grade B-cell lymphoma, not otherwise specified (NOS) Clinically, it ty...

Key pathophysiologic subsets include tumors defined by cytogenetic "double-hit" or "triple-hit" rearrangements—most notably involving *MYC* alongside *BCL2* (and historically *BCL6*)—as well as high-grade B-cell lymphoma, not otherwise specified (NOS)

Key pathophysiologic subsets include tumors defined by cytogenetic "double-hit" or "triple-hit" rearrangements—most notably involving *MYC* alongside *BCL2* (and historically *BCL6*)—as well as high-grade B-cell lymphoma, not otherwise specified (NOS)