Chronic lymphocytic leukemia (CLL) and prolymphocytic leukemia (PLL) are types of blood cancer. They develop in types of white blood cells called B cells or T cells, or the precursors to these cells.

What Is Acute Lymphoblastic Leukemia? Acute lymphoblastic leukemia (ALL) is a type of blood cancer that starts in white blood cells in your bone marrow, the soft inner part of your bones. It develops ...

That mysterious purple mark appearing on your arm without any memory of bumping into something might seem like a minor annoyance, but when bruising becomes frequent and unexplained, it could signal a ...

For every possible cause of childhood leukemia pain, your child’s team of doctors and healthcare providers has a way to manage it. This year, about 15,000 parents will learn that their child or teen ...