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Sial M, George KJ. A Review of Spinal Lesions in Neurofibromatosis Type 1 in a Large Neurofibromatosis Type 1 Center. World Neurosurg 2023; 169:e157-e163. [PMID: 36334707 DOI: 10.1016/j.wneu.2022.10.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Spinal lesions are a known manifestation of neurofibromatosis type 1 (NF1). The aim of this retrospective review was to analyze and report the prevalence of spinal lesions on imaging in a large NF1 center. METHODS The data were collected from a period of 62 months from a cohort of 514 patients. Data were collected from multidisciplinary team meeting reports that included radiologic reports of each patient investigating 20 distinct variables. The prevalence of each of these lesions was calculated, and any statistically significant associations were investigated using the χ2 test. RESULTS Four-hundred forty-seven patients had classic NF1, and 67 patients had spinal NF1. Many of the patients had spinal abnormalities; 25.7% of these patients were found to have dural ectasia, whereas 44.9% of patients had a spinal deformity. A statistically significant association between dural ectasia and spinal neurofibromatosis was established (P < 0.05). An additional statically significant association was established between dural ectasia and spinal deformity (P < 0.00001). The patients with spinal nerve root tumors were identified, and it was found that 49.8% of patients possessed these tumors, whereas 56.3% of these tumors were intraspinal tumors. The most common region affected was the cervical spine, and the most common spinal level was C2. CONCLUSIONS This high prevalence of spinal tumours in mobile areas of the spine is possibly the result of a combination of genetic predisposition and repeated microtraumas resulting in tumor formation. This is the largest reported study of spinal lesions in NF1 based on imaging and offers insights into the etiology and relationships between lesions.
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Affiliation(s)
- Moska Sial
- Departmet of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
| | - K Joshi George
- Neurosurgery, Salford Royal Foundation Trust, Manchester, United Kingdom
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Well L, Careddu A, Stark M, Farschtschi S, Bannas P, Adam G, Mautner VF, Salamon J. Phenotyping spinal abnormalities in patients with Neurofibromatosis type 1 using whole-body MRI. Sci Rep 2021; 11:16889. [PMID: 34413392 PMCID: PMC8376946 DOI: 10.1038/s41598-021-96310-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/27/2021] [Indexed: 11/16/2022] Open
Abstract
Neurofibromatosis Type 1 (NF1) has been reported to be associated with a variety of spinal abnormalities. The purpose of this study was to quantify the prevalence of spinal abnormalities in a collective of NF1 patients that is representative for the general NF1 population, to associate the co-appearance of spinal abnormalities with both NF1 and clinical symptoms and to investigate if different mutations of the NF1 gene affect the prevalence of these abnormalities. Retrospectively, 275 patients with NF1 and an age- and sex-matched collective of 262 patients were analyzed. The prevalence of spinal abnormalities was recorded. Mutational analysis of the NF1 gene was obtained in 235 NF1 patients. Associations between spinal abnormalities, clinical symptoms and genotype were investigated by binary logistic regression analysis. Prevalence of all spinal abnormalities was higher in NF1 patients than in the control group. Six characteristics of spinal abnormalities were significantly associated with NF1 (all p < 0.05). An influence of scalloping on scoliosis (OR 3.01; p = 0.002); of meningoceles (OR 7.63) and neuroforaminal tumors (OR 2.96) on scalloping, and of dural ectasia on neuroforaminal tumors (OR 1.93) was identified. Backpain and loss of motor function were associated with neuroforaminal tumors, spinal tumors and scalloping of vertebral bodies (all p < 0.05). Specific mutations of the NF1 gene were not relevantly associated with the development of spinal abnormalities. These findings can aid clinicians to improve clinical care of NF1 patients by creating awareness for co-appearences of specific spinal abnormalities and associated symptoms.
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Affiliation(s)
- Lennart Well
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
| | - Anna Careddu
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Maria Stark
- Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Said Farschtschi
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Peter Bannas
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Victor-Felix Mautner
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Johannes Salamon
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
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Hasan MT, Patil S, Chauhan V, Gosal D, Ealing J, Du Plessis D, Soh C, George KJ. Spinal cord compression from hypertrophic nerve roots in chronic inflammatory demyelinating polyradiculoneuropathy - A case report. Surg Neurol Int 2021; 12:114. [PMID: 33880219 PMCID: PMC8053436 DOI: 10.25259/sni_35_2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/17/2021] [Indexed: 02/01/2023] Open
Abstract
Background: Spinal cord compression secondary to nerve root hypertrophy is often attributed to hereditary neuropathies. However, to avoid misdiagnosis, rare immune-mediated neuropathy such as chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) should not be overlooked. This report presents a case of multilevel nerve root hypertrophy leading to significant cord compression from CIDP. Case Description: We report a 56-year-old gentleman with type two diabetes mellitus who presented with subacute cervical cord syndrome following a fall. Mixed upper and lower motor neuron features were noted on examination. Magnetic resonance imaging showed significant pan-spinal proximal nerve root hypertrophy, compressing the cervical spinal cord. Initial radiological opinion raised the possibility of neurofibromatosis type 1 (NF-1), but neurophysiology revealed both axonal and demyelinating changes that were etiologically non-specific. C6 root and sural nerve biopsies taken at cervical decompression displayed striking features suggestive for CIDP. Although NF-1 is the most observed condition associated with root hypertrophy, other important and potentially treatable differentials need to be entertained. Conclusion: While rare, CIDP can cause significant spinal cord compression. Furthermore, clinical manifestations of CIDP can mimic those of inherited peripheral neuropathies. Neurologists and neurosurgeons should be aware of this condition to optimize subsequent therapeutic decision-making.
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Affiliation(s)
- Md Tanvir Hasan
- Department of Neurosurgery, Salford Royal NHS Foundation Trust, Greater Manchester, United Kingdom
| | - Subodh Patil
- Department of Neurosurgery, Salford Royal NHS Foundation Trust, Greater Manchester, United Kingdom
| | - Vanisha Chauhan
- Department of Neurology, Salford Royal NHS Foundation Trust, Greater Manchester, United Kingdom
| | - David Gosal
- Department of Neurology, Salford Royal NHS Foundation Trust, Greater Manchester, United Kingdom
| | - John Ealing
- Department of Neurology, Manchester Centre for Genomic Medicine, St Mary's Hospital, Greater Manchester, United Kingdom
| | - Daniel Du Plessis
- Department of Cellular Pathology, Salford Royal NHS Foundation Trust, Greater Manchester, United Kingdom
| | - Calvin Soh
- Department of Radiology, Manchester University NHS Foundation Trust, Greater Manchester, United Kingdom
| | - K Joshi George
- Department of Neurosurgery, Salford Royal NHS Foundation Trust, Greater Manchester, United Kingdom
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Ozarslan B, Russo T, Argenziano G, Santoro C, Piccolo V. Cutaneous Findings in Neurofibromatosis Type 1. Cancers (Basel) 2021; 13:463. [PMID: 33530415 PMCID: PMC7865571 DOI: 10.3390/cancers13030463] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/02/2021] [Accepted: 01/14/2021] [Indexed: 12/15/2022] Open
Abstract
Neurofibromatosis type 1 (NF1) is a complex autosomal dominant disorder associated with germline mutations in the NF1 tumor suppressor gene. NF1 belongs to a class of congenital anomaly syndromes called RASopathies, a group of rare genetic conditions caused by mutations in the Ras/mitogen-activated protein kinase pathway. Generally, NF1 patients present with dermatologic manifestations. In this review the main features of café-au-lait macules, freckling, neurofibromas, juvenile xanthogranuloma, nevus anemicus and other cutaneous findings will be discussed.
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Affiliation(s)
| | - Teresa Russo
- Dermatology Unit, University of Campania Luigi Vanvitelli, 80100 Naples, Italy; (T.R.); (G.A.)
| | - Giuseppe Argenziano
- Dermatology Unit, University of Campania Luigi Vanvitelli, 80100 Naples, Italy; (T.R.); (G.A.)
| | - Claudia Santoro
- Department of Woman, Neurofibromatosis Referral Centre, Child and of General and Specialised Surgery, University of Campania Luigi Vanvitelli, 80100 Naples, Italy;
| | - Vincenzo Piccolo
- Dermatology Unit, University of Campania Luigi Vanvitelli, 80100 Naples, Italy; (T.R.); (G.A.)
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Curtis-Lopez CM, Soh C, Ealing J, Gareth Evans D, Burkitt Wright EMM, Vassallo G, Karabatsou K, Joshi George K. Clinical and neuroradiological characterisation of spinal lesions in adults with Neurofibromatosis type 1. J Clin Neurosci 2020; 77:98-105. [PMID: 32417129 DOI: 10.1016/j.jocn.2020.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/04/2020] [Indexed: 11/25/2022]
Abstract
Neurofibromatosis type 1 (NF1) manifests itself in many ways in the spine. This study aims to report the types of spinal lesions, clinical and demographic data in a large cohort from a complex NF1 centre. The characteristics of those with spinal neurofibromatosis, where neurofibromas are present on every spinal nerve root, were sought for comparison with the wider group of NF1 patients. This is a retrospective review of MDT minutes of 303 patients from a UK NF1 centre and the largest reported series of NF1 patients based on radiological data. Prevalence of each symptom and lesion was calculated and statistically significant associations were established. The most reported findings were cutaneous lesions (44.9%) and neurological deficit (27.4%). 28.4% had dural ectasia, 52.5% had some form of spinal deformity. 57.8% had spinal nerve root tumours, the most common of which were at C2. The most progressive lesions were spinal nerve root tumours (29.1%). The only statistically significant association found was between dural ectasia and spinal deformity (P < 0.003), where dural ectasia is associated with a 32.6% increase in spinal deformity incidence. This is the largest descriptive study of spinal lesions in NF1. Spinal tumours and spinal deformity are prevalent in NF1. The predilection of spinal tumours for flexible spinal regions suggests that repetitive movement might be an important factor in pathogenesis. Physicians and patients should be alert to the observation that although many spinal neurofibromatosis patients display no neurological deficit, they often have significant lesions which require monitoring and sometimes surgery.
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Affiliation(s)
| | - Calvin Soh
- Manchester Centre for Genomic Medicine, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, United Kingdom
| | - John Ealing
- Neurosurgery, Salford Royal Foundation Trust, Manchester, United Kingdom; Manchester Centre for Genomic Medicine, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, United Kingdom
| | - D Gareth Evans
- Manchester Centre for Genomic Medicine, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, United Kingdom; Division of Evolution and Genomic Sciences, University of Manchester, Manchester Academic Health Sciences Centre, United Kingdom
| | - Emma M M Burkitt Wright
- Manchester Centre for Genomic Medicine, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, United Kingdom; Division of Evolution and Genomic Sciences, University of Manchester, Manchester Academic Health Sciences Centre, United Kingdom
| | - Grace Vassallo
- Manchester Centre for Genomic Medicine, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, United Kingdom; Division of Evolution and Genomic Sciences, University of Manchester, Manchester Academic Health Sciences Centre, United Kingdom
| | | | - K Joshi George
- Neurosurgery, Salford Royal Foundation Trust, Manchester, United Kingdom.
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Matano F, di Russo P, Okano A, Passeri T, Penet N, Fava A, Camara B, Polivka M, Giammattei L, Froelich S. Oculomotor Neurofibroma: A Different Histology Implying an Unsatisfying Clinical Outcome. World Neurosurg 2020; 139:31-38. [PMID: 32289509 DOI: 10.1016/j.wneu.2020.03.191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND Tumors arising from oculomotor nerve are rare, with few cases reported in the literature. Generally, whereas schwannomas are well encapsulated tumors, neurofibromas tend to invade the entire nerve fibers. These differences influence surgical resection and neurological clinical outcome, with neurofibroma often requiring the sacrifice of the nerve. Accordingly, an incorrect preoperative diagnosis can lead to incomplete patient counseling before surgery. CASE DESCRIPTION We report 2 cases: a patient with oculomotor schwannoma and a patient with oculomotor neurofibroma. After tumor resection, the patient with a diagnosis of schwannoma recovered with 3rd nerve palsy, while patient with the neurofibroma developed a complete oculomotor nerve deficit. For each patient, surgical strategy and neurological outcome are elucidated in relation with differences in preoperative magnetic resonance imaging and histology. CONCLUSIONS To the best of our knowledge, this is the first report of an oculomotor neurofibroma. When an oculomotor nerve tumor is suspected, a careful preoperative evaluation of magnetic resonance imaging guides in distinguishing the different histology, in selecting the treatment strategy, and in correctly informing the patient on expected postoperative neurologic outcome.
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Affiliation(s)
- Fumihiro Matano
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), Paris, France.
| | - Paolo di Russo
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), Paris, France
| | - Atsushi Okano
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), Paris, France
| | - Thibault Passeri
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), University of Paris Diderot, Paris, France
| | - Nicolas Penet
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), University of Paris Diderot, Paris, France
| | - Arianna Fava
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), Paris, France
| | - Breno Camara
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), Paris, France
| | | | - Lorenzo Giammattei
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), University of Paris Diderot, Paris, France
| | - Sébastien Froelich
- Department of Neurosurgery, Lariboisière Hospital (AP-HP), University of Paris Diderot, Paris, France
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