Abstract
Individuals with Neurofibromatosis 1 have a 15.8% lifetime risk of developing malignant peripheral nerve sheath tumour (MPNST), which usually arises within a plexiform neurofibroma, is difficult to diagnosis and treat and often has a poor prognosis. A family history of MPNST, prior treatment with radiotherapy, a large disease burden, nodular neurofibromas, NF1 microdeletion, atypical neurofibromas and neurofibromatous neuropathy are risk factors requiring heightened surveillance. The cardinal symptoms of MPNST are rapid neurofibroma growth, persistent pain, hard texture and neurological deficit. Magnetic resonance imaging and 18F fluorodeoxyglucose positron emission tomography computerised tomography may assist the diagnosis. However, diagnostic biopsy for high grade lesions and excision biopsy (without wide margins) for atypical neurofibroma/low grade MPNST is the gold standard. The aim of treatment for high grade MPNST is surgery with wide margins, radiotherapy may be helpful for local control and chemotherapy metastasis but neither is curative.
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Acknowledgements
I am very grateful to the patients within our national neurofibromatosis service, my colleagues in the NF1 and sarcoma units and NHS England for funding the clinical service.
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Ferner, R.E. (2020). Diagnosis and Management of Malignant Tumours in NF1: Evolution from Atypical Neurofibroma to Malignant Peripheral Nerve Sheath Tumour and Treatment Options. In: Tadini, G., Legius, E., Brems, H. (eds) Multidisciplinary Approach to Neurofibromatosis Type 1. Springer, Cham. https://doi.org/10.1007/978-3-319-92450-2_12
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DOI: https://doi.org/10.1007/978-3-319-92450-2_12
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