A Schwannoma is referred to as a neurilemoma because it originates from Schwann cells, which are a type of neural crest cell. Schwann cells are crucial components of the peripheral nervous system, responsible for producing the myelin sheath that insulates and protects peripheral nerves. These tumours arise from Schwann cells, and as a result, they are also known as neurilemomas.
The term "neurilemoma" reflects the tissue of origin and underscores the fact that these tumours primarily involve the Schwann cell sheath. Schwannomas are typically benign, slow-growing tumours, and while they can occur anywhere along peripheral nerves, they most commonly affect the eighth cranial nerve (vestibulocochlear nerve) in the head, leading to symptoms such as hearing loss and balance issues.
In essence, the name neurilemoma provides insight into the cellular and tissue characteristics of the tumour, emphasizing its connection to Schwann cells and the neural elements of the peripheral nervous system.