T-cell acute lymphoblastic leukemia

T-cell acute lymphoblastic leukemia is an aggressive hematologic malignancy characterized by the uncontrolled proliferation and accumulation of immature T-cell lymphoblasts in the bone marrow and peripheral blood

T-cell acute lymphoblastic leukemia is an aggressive hematologic malignancy characterized by the uncontrolled proliferation and accumulation of immature T-cell lymphoblasts in the bone marrow and peripheral blood It affects the lymphoid and hematopoietic systems across both pediatric and adult populations, accounting for approximately 10% to 15% of childhood and up to 25% of adult acute lymphoblastic leukemia cases Pathophysiologically, the disease arises from multistep oncogenic mutations—such ...

It affects the lymphoid and hematopoietic systems across both pediatric and adult populations, accounting for approximately 10% to 15% of childhood and up to 25% of adult acute lymphoblastic leukemia cases Clinically, it frequently presents with marked leukocytosis, bone marrow failure causing cytopenias, an anterior mediastinal mass from thymic expansion, and a predilection for central nervous system infiltration

Pathophysiologically, the disease arises from multistep oncogenic mutations—such as activating alterations in *NOTCH1*—that cause differentiation arrest during thymocyte development Clinically, it frequently presents with marked leukocytosis, bone marrow failure causing cytopenias, an anterior mediastinal mass from thymic expansion, and a predilection for central nervous system infiltration

Clinically, it frequently presents with marked leukocytosis, bone marrow failure causing cytopenias, an anterior mediastinal mass from thymic expansion, and a predilection for central nervous system infiltration