<prompt> Which of the following is the most common tumour associated with neurofibromatosis in a child?Juvenile myelomonocytic leukemiaAcute lymphoblastic leukemiaAcute monocytic leukemiaAcute myeloid leukemiac  <response>: Juvenile myelomonocytic leukemiaJMML is a rare childhood cancer. It happens when immature blood cells called blasts make too many myelocytes and monocytes two types of white blood cells. Ref ganongs review of medical physiology 25e p765 