Noun
acute leukemia characterized by proliferation of immature lymphoblast-like cells in bone marrow, lymph nodes, spleen, and blood; most common in children
Source: WordNetAcute lymphoblastic leukemia, known as ALL, is a form of blood cancer that is most often diagnosed in children ages zero to 4 years old, though older children and adults can also be diagnosed. Source: Internet
On Feb. 28, 2019, 16-month-old Rylee Ann Motycka was diagnosed with Pre-B cell Acute Lymphoblastic Leukemia. Source: Internet