Who gets medulloblastoma / PNET?
Less than 90 children a year develop medulloblastoma or PNET in the UK. However, it is still the most common malignant brain tumour in children, representing 20% of all childhood brain tumours. They are most common in children between the ages of three and eight, and are slightly more common in boys than girls. They can also be found in adults but are extremely rare. Like most brain tumours the cause of medulloblastoma or PNET is usually unknown.
