T-Cell<unk>  Leukemia <unk>  is a type of acute<unk>  leukemia with aggressive malignant neoplasm of the bone marrow. Acute<unk>  Leukemia (ALL) is a condition where immature white blood cells accumulate in the bone marrow, subsequently crowding out normal white blood cells and create build-up in the liver, spleen, and lymph nodes. The two most common types of ALL are B-Lymphocytes and T-Lymphocytes, where the first protects the body against viruses and bacteria through antibody production which can directly destroy target cells or trigger others to do so, whilst the latter directly destroy bacteria or cells infected with viruses. Approximately 20% of all ALL patients are categorized specifically to suffer from<unk>  and it is seen to be more prevalent in the adult population in comparison to children, with incidences shown to diminish with age. Amongst<unk>  cases in the pediatric population, a median onset of age 9 has been identified and the disease is particularly prominent amongst adolescents. The disease stems from cytogenic and molecular abnormalities, resulting in disruption of developmental pathways controlling thymocyte development, tumor suppressor development, and alterations in control of cell growth and proliferation. Distinct from adult T-Cell Leukemia where T-Cell Lymphotropic Virus Type I causes malignant maturation of T-cells,<unk>  is a precursor for lymphoid neoplasm. Its clinical presentation most commonly includes infiltration of the central nervous system (CNS), and further identifies mediastinal mass presence originating from the thymus, along with extramedullary involvement of multiple organs including the lymph node as a result of hyperleukocytosis.
T-Cell Acute Lymphoblastic Leukemia
T-lymphoblastic leukemia/lymphoma
Adult T-cell leukemia/lymphoma
Atypical chronic myeloid leukemia
T-cell acute lymphoblastic leukemia
Aggressive NK-cell leukemia
T-cell prolymphocytic leukemia
B-cell prolymphocytic leukemia