This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
Transient myeloproliferative disorder of the newborn is seen in association with: 
Select and explain. 
A. Turner syndrome, B. Down syndrome, C. Neurofibromatosis, D. Ataxia telangiectasia
B: Down syndrome
Answer: B: Down syndrome 
Explanation: b. Down syndrome(Ref: Nelson's 20/e p 2442-2443, Ghai 8/e p 605-607)'Neonates and infants with Down Syndrome may have a condition known as 'transient myeloproliferative syndrome which mimics congenital leukemia'.