26. A 4 YO female presents with a 3 month history of easy bruising, SOB and recurrent infections, with sweating, fever and malaise. Investigations show: Lymphadenopathy, hepatosplenomegaly, anaemia, thrombocytopenia, neutropenia, leucocytosis, bone marrow: blast cells. Lymphoblast,What is the most likely diagnosis?
ALL - B cell lineage - Immunotyping and cytogenetic testing.