Certified Neuroscience Registered Nurse (CNRN) Practice Exam

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Prepare for the CNRN Exam. Test your knowledge with our comprehensive multiple-choice questions and detailed explanations. Boost your confidence and improve your chances of a successful exam outcome!

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How does the incidence of medulloblastoma change with age?

It increases with age
It decreases with age
It remains constant
It is variable and unpredictable

The correct answer is: It decreases with age

Medulloblastoma is a type of brain tumor most commonly found in children, particularly those between the ages of 4 and 8. The peak incidence occurs during early childhood, and it is relatively rare in adults. As individuals grow older, the likelihood of developing medulloblastoma significantly decreases. This is due to various factors, including the development of the central nervous system and the biological characteristics of tumors that lead to their prevalence in younger populations. In adults, the incidence is much lower, demonstrating a substantial decline with increasing age. Therefore, the correct understanding of the relationship between age and the incidence of medulloblastoma is that it decreases as age increases, consistent with the patterns observed in epidemiological studies regarding this specific type of cancer.