T-cell acute lymphoblastic leukemia (T-ALL)

T-cell acute lymphoblastic leukemia (T-ALL) is a fast-growing cancer of the blood and bone marrow, involving immature T-lymphocytes (a type of white blood cell). In T-ALL, these cells become abnormal and multiply rapidly, crowding out healthy blood cells. This disruption can cause symptoms like fatigue, infections, easy bruising, and swelling. It often requires intensive chemotherapy, and sometimes stem cell transplants, to eliminate the abnormal cells and restore normal blood cell production. T-ALL is more common in children and young adults, but timely diagnosis and treatment can improve outcomes.