<unk>  is not a contagious nor inherited condition. Its two main risk factors are age and gender. Most cases of leukemia increase with age, with ALL being the main exception, which peaks in children aged 2 to 5 years.<unk>  is seen to be most prevalent in the adult population, but amongst cases in the pediatric population, it is seen to have a median onset of age 9 and is most prominent to adolescents. The disease also is marked male predominance with a three-fold increased risk of developing<unk>  in comparison to females. It is currently unclear as to why<unk>  is preferential towards older children and males.
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