Few people experience prolonged radiation exposure but it’s one of the most notorious cancer sources. Realistically most people’s only relationship with radiation is an x-ray or a CT scan. However, some cancer patients will also undergo radiation therapy and endure more intense radiation.
Neurologists noted that head X-rays can cause brain tumors but it’s uncommon. Furthermore, radiotherapy may also trigger them in unusual cases. Usually, the patient is between a rock and a hard place because they must undergo treatment for their original ailment (via Verywell Health).