The topic Cranial Nerve 11 Schwannoma you are seeking is a synonym, or alternative name, or is closely related to the medical condition Accessory Nerve Schwannoma.

Quick Summary:

• Schwannomas are mostly benign tumors that arise from the Schwann cells around the nerves; these tumors are nerve sheath tumors. Schwannomas involving the central nervous system (CNS) are classified as grade I tumors of the cranial and paraspinal nerves, according to the World Health Organization (WHO)
• WHO grade I brain tumors are the most benign of the brain tumors that are slow-growing and are not known to infiltrate into surrounding tissues. They offer a very high chance for surgery to be curative, and thus, have the best prognosis amongst all brain tumors; long-term survivals are usually noted
• A majority of schwannomas involve the cranial nerves, particularly cranial nerve VIII (causing vestibular schwannomas). Cranial nerves are 12 pairs of sensory and/or motor nerves having specific functions that connect parts of the head and neck region to the brain. Ten of these pairs originate from the brainstem; two pairs originate from the cerebrum
• Accessory Nerve Schwannoma is a very rare form of schwannoma that involves the cranial nerve XI (CN XI), or the accessory nerve. The nerve is traditionally subdivided into two parts - the cranial part and the spinal part. The former originates in the medulla oblongata, while the latter in the upper spinal cord in the neck
• The cranial part of the nerve is involved in control of muscles in the mouth and throat (soft palate, larynx, and pharynx). The spinal component controls the sternocleidomastoid muscle and trapezius muscle, two main muscles that help in neck and shoulder movement, including rotating, extending, or flexing of the neck and shoulders
• Currently, no causative factors have been identified for Accessory Nerve Schwannoma, although certain genetic, environmental, and occupational factors have been implicated in schwannoma development. It is reported that in a majority, the tumor is not seen in the presence of neurofibromatosis (NF), which is a rare genetic disorder
• The signs and symptoms of Accessory Nerve Schwannomas depend on the location of the tumor along the accessory nerve, and the involvement of other cranial nerves. Most individuals present mild headaches, walking difficulties, nausea and vomiting, and lightheadedness. Many also report head, neck, and shoulder pain of varying degrees
• Occasionally, the healthcare provider may undertake a ‘wait and watch’ approach for small-sized and slow-growing tumors. In many cases, a complete excision by surgery can be curative for benign tumors. The prognosis of Accessory Nerve Schwannoma is typically good with appropriate management and follow-up care

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