• Benign: refers to a condition, tumour, or growth that is not cancerous. It does not spread to other parts of the body or destroy nearby tissue.
• Immune System: The system of organs and processes of the body that provide resistance to and protection from infection and toxins. Organs include thymus, bone marrow, and lymph nodes.
• Vestibular System: A system of the inner ear consisting of three semicircular canals which include a bony and a membranous labyrinth. It is responsible for the hearing and balance portion of the individual.
• Labyrinth: Inner ear is also known as labyrinth.