Langerhans cell histiocytosis is a rare disorder. Its prevalence is estimated at 1 to 2 in 100,000 people.
How many people are affected by Langerhans cell histiocytosis ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by Langerhans cell histiocytosis ? [/INST] \n Langerhans cell histiocytosis is a rare disorder. Its prevalence is estimated at 1 to 2 in 100,000 people.</s>