Neurofibromas are benign tumours that develop in the peripheral nervous system. They are typically associated with a genetic disorder called neurofibromatosis, which can cause these tumours to form on nerves throughout the body. Neurofibromas can vary in size and can be classified into different types based on their characteristics:

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1. Cutaneous neurofibromas: These are the most common type of neurofibromas and typically appear as small, rubbery, non-painful nodules or bumps on or under the skin.

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2. Plexiform neurofibromas: These are less common but tend to be more complex and can grow larger than cutaneous neurofibromas. They develop within nerve bundles and can involve multiple nerves.

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3. Diffuse neurofibromas: These are larger, less defined tumours that can involve a larger area of tissue than other types of neurofibromas.

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Neurofibromas are usually non-cancerous and rarely transform into malignant tumours. However, they can cause symptoms such as pain, weakness, or disfigurement, depending on their location and size. Treatment options for neurofibromas may include surgical removal for symptomatic relief or if the tumour is causing complications. Monitoring and management of neurofibromas are often part of a comprehensive care plan for individuals with neurofibromatosis.