What is a Skull Base Tumour?
The skull base consists of several bones that form the base of the head and the bony ridge behind the eyes and the nose. Most skull base tumours grow inside the skull, but some form on the outside. These tumours primarily grow inside the skull but occasionally can grow outside too. They can be either primary or secondary (metastatic) tumours depending on the place of origin.
What are the symptoms of a Skull Base Tumour?
The symptoms of a skull base tumours appear slowly and only when the tumours have grown large do they start causing pressure on vital structures in the brain. Symptoms depend on the type, location and size of the tumour.
Most common symptoms include
There are no obvious causes for the development of skull base tumours.
Risk factors may include
- Previous exposure of the head to radiation therapy
- Exposure to chemicals like vinyl chloride, arsenic and herbicides
- Certain genetic conditions
- Smoking and consumption of alcohol
Diagnosis of skull base tumours is very peculiar and requires thorough examination of the patient along with diagnostic tests.
The various diagnostic tests that are conducted
- A physical examination of the patient, including patient’s symptoms, personal and family health history
- A neurological examination to check vision, hearing, balance, coordination, reflexes and ability to think and remember.
- Imaging of the brain is also done:
- Magnetic resonance imaging (MRI)
- Computed Tomography (CT or CAT scan)
- A bone scan
- Positron Emission Tomography (PET) scans
The treatment for skull base tumours depend upon the tumour location, type and general health of the patient. It may include surgery, radiation therapy, chemotherapy, and/or observation.
