A schwannoma, also known as a neurilemoma, is a tumour that arises from Schwann cells, which are responsible for the formation of the myelin sheath covering peripheral nerves. Schwannomas typically present as single, benign tumours of the nervous system. They are most commonly found in the head and neck region, particularly along the eighth cranial nerve (vestibulocochlear nerve) in the internal auditory canal.
However, in some cases, Schwannomas can present in multiple forms. This condition is known as multiple schwannomas or schwannomatosis. It is less common than a single, isolated schwannoma. In these cases, tumours can arise from various points along the peripheral nervous system, including cranial nerves, spinal roots, brachial and lumbosacral plexuses, or major peripheral nerves.
We have an unusual case involving bilateral Schwannomas that are likely originating from the lower cranial nerves on right side with in involvement of hypoglossal canal and on the left side, it's suggested to be originating from the trigeminal nerve.
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