This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Which of the following is not a feature of juvenile CML? \nSelect and explain. \nA. Thrombocytopenia, B. Lymphadenopathy, C. Presence of Philedelphia chromosome, D. High HbF', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Philedelphia chromosome positivity is a feature of adult CML. Juvenile CML is commonly seen in children between 1-2 years of age. It is characterised by enlarged lymphnodes, spleen and liver. Lab findings includes thrombocytopenia, leukocyte count lower than classic CML, and in increase in propoion of fetal hemoglobin.', 'role': 'assistant'}]