Precursor B-Cell Lymphoblastic Leukemia-Lymphoma

**Definition:** A leukemia/lymphoma found predominately in children and adolescents and characterized by a high number of lymphoblasts and solid tumor lesions. Frequent sites involve LYMPH NODES, skin, and bones. It most commonly presents as leukemia.

**Tree numbers:** - C04.557.337.428.600.600 - C15.378.508.428.600.600 - C15.604.515.560.600.600 - C20.683.515.528.600.600

**Synonyms:** - Precursor B-Cell Lymphoblastic Leukemia - Pre-B-Cell Leukemia - Leukemia, Pre-B-Cell - Precursor B-Cell Lymphoblastic Lymphoma - Pre-B ALL - Pre B-ALL