<prompt> Which of the following is the most common tumour associated with Neurofibromatosis -1 NF-I in a child?Juveile Myelomonocytic Leukemia JMMLAcute Lymphoblastic Leukemia ALLAcute Myeloid Leukemia AMLChronic Myeloid Leukemia CML  <response>: Children with neurofibromatosis type 1 have higher risk of developing juvenile myelomonocytic leukemia. Ref: Essential pediatrics by O.P.Ghai 6th ednpage 545; Rooks textbook of dermatology, Volume 1 By Ahur Rook, Tony Burns FRCP.page 2-32. 