Resumen
Introducción: el síndrome de Vulpian-Bernhardt es una forma atípica de la enfermedad de la motoneurona descrita desde el siglo XIX. La importancia de un diagnóstico oportuno radica en la mayor supervivencia que presenta esta variante. Debido a la rareza clínica y al diagnóstico complejo presentamos un caso clínico de esta enfermedad, por lo que describimos el cuadro clínico típico, el abordaje diagnóstico y hacemos una revisión bibliográfica de este trastorno neurodegenerativo.
Caso clínico: hombre de origen latinoamericano que comenzó su padecimiento con debilidad de miembros torácicos, asimétrica y progresiva de distal a proximal. Los síntomas progresaron hasta limitar sus actividades de la vida diaria y su independencia física. La exploración física fue compatible con enfermedad de motoneurona. Se hicieron estudios de extensión y neuroconducción que confirmaron hallazgos compatibles con afectación en motoneurona limitada a miembros torácicos.
Conclusión: el síndrome Vulpian-Bernhardt es una forma clínica poco común. Debido a su rareza, es fácil confundir el cuadro clínico, incluso por parte de experimentados. La importancia del electrodiagnóstico radica en identificar el origen neurogénico de la enfermedad, los datos de denervación activa y reinervación. Al ser una forma en la que se presenta una supervivencia mayor que en la forma clásica, es importante el diagnóstico claro para dar una mejor calidad de vida y tratamiento de soporte.
Abstract
Background: Vulpian-Bernhardt syndrome is an atypical form of the motor neuron disease described since the 19th century. The importance of a timely diagnosis lies in the increased survival present in this variant. Due to the clinical rarity and complex diagnosis we report a clinical case of this disease, which is why we describe the typical clinical presentation, the diagnostic approach, and we make a bibliographic review of this neurodegenerative disorder as well.
Clinical case: Latin American man whose clinical case onset was characterized by thoracic asymmetric and increasing limb weakness, showing affection from distal to proximal upper limbs area. Subsequently, symptoms worsened to the point of limiting day-to-day activities and conditioning patient’s physical independence. Physical examination was consistent with motor neuron disease. Nerve conduction studies were performed and confirmed findings compatible with motor neuron involvement limited to thoracic limbs.
Conclusion: Vulpian-Bernhardt syndrome is an uncommon form of motor neuron disease. Due to the rarity of its presentation, it is frequent to confuse clinical profile even for trained physicians. The importance of electrodiagnosis relies in identifying the neurogenic origin of the disease, as well as the active denervation and reinnervation data. Considering that with this syndrome patients have a longer survival than with the classic form of amyotrophic lateral sclerosis, it is important to have a clear diagnosis approach in order to provide a better quality of life and supportive treatment.
Xu L, Liu T, Liu L, et al. Global variation in prevalence and incidence of amyotrophic lateral sclerosis: a systematic review and meta-analysis. J Neurol. 2020;267(4):944-53. doi: 10.1007/s00415-019-09652-y.
Feldman EL, Goutman SA, Petri S, et al. Amyotrophic lateral sclerosis. Lancet. 2022;400(10360):1363-80. doi: 10.1016/S0140-6736(22)01272-7.
Quinn C, Elman L. Amyotrophic Lateral Sclerosis and Other Motor Neuron Diseases. Continuum (Minneap Minn). 2020;26(5):1323-47. doi: 10.1212/CON.0000000000000911.
Jawdat O, Statland JM, Barohn RJ, et al. Amyotrophic Lateral Sclerosis Regional Variants (Brachial Amyotrophic Diplegia, Leg Amyotrophic Diplegia, and Isolated Bulbar Amyotrophic Lateral Sclerosis). Neurol Clin. 2015;33(4):775-85. doi: 10.1016/j.ncl.2015.07.003.
Vijayakumar UG, Milla V, Cynthia Stafford MY, et al. A Systematic Review of Suggested Molecular Strata, Biomarkers and Their Tissue Sources in ALS. Front Neurol. 2019;10:400. doi: 10.3389/fneur.2019.00400.
Koh YH, Pang YH, Lim EW. ALS Regional Variants (Brachial Amyotrophic Diplegia and Amyotrophic Leg Diplegia): Still A Diagnostic Challenge in Neurology. Acta Neurol Taiwan. 2023;32(1):42-7.
Pinto WBVR, Debona R, Nunes PP, et al. Atypical Motor Neuron Disease variants: Still a diagnostic challenge in Neurology. Rev Neurol (Paris). 2019;175(4):221-32. doi: 10.1016/j.neurol.2018.04.016.
Dimachkie MM, Muzyka IM, Katz JS, et al. Leg amyotrophic diplegia: prevalence and pattern of weakness at US neuromuscular centers. J Clin Neuromuscul Dis. 2013;15(1):7-12. doi: 10.1097/CND.0b013e31829e22d1.
Katz JS, Wolfe GI, Andersson PB, et al. Brachial amyotrophic diplegia: a slowly progressive motor neuron disorder. Neurology. 1999;53(5):1071-6. doi: 10.1212/wnl.53.5.1071.
Goutman SA, Hardiman O, Al-Chalabi A, et al. Recent advances in the diagnosis and prognosis of amyotrophic lateral sclerosis. Lancet Neurol. 2022;21(5):480-93. doi: 10.1016/S1474-4422(21)00465-8.
Walhout R, Verstraete E, van den Heuvel MP, et al. Patterns of symptom development in patients with motor neuron disease. Amyotroph Lateral Scler Frontotemporal Degener. 2018;19(1-2):21-8. doi: 10.1080/21678421.2017.1386688.
Nicholson K, Murphy A, McDonnell E, et al. Improving symptom management for people with amyotrophic lateral sclerosis. Muscle Nerve. 2018;57(1):20-4. doi: 10.1002/mus.25712.
Orsini M, Catharino AM, Catharino FM, et al. Man-in-the-barrel syndrome, a symmetrical proximal brachial amyotrophic diplegia related to motor neuron diseases: a survey of nine cases. Rev Assoc Med Bras (1992). 2009;55(6):712-5. doi: 10.1590/s0104-42302009000600016.
López-Hernández JC, Bazán-Rodríguez L, Pérez-Torres T, et al. Síndrome de Vulpian-Bernhardt. Frecuencia, características clínicas y electrofisiológicas en un centro de atención de tercer nivel en México. Rev Neurol. 2021;72(3):85-91. doi: 10.33588/rn.7203.2020126.
Pender N, Pinto-Grau M, Hardiman O. Cognitive and behavioural impairment in amyotrophic lateral sclerosis. Curr Opin Neurol. 2020;33(5):649-54. doi: 10.1097/WCO.0000000000000862.
Van Eijk RPA, Nikolakopoulos S, Roes KCB, et al. Innovating Clinical Trials for Amyotrophic Lateral Sclerosis: Challenging the Established Order. Neurology. 2021;97(11):528-36. doi: 10.1212/WNL.0000000000012545.
Boruah DK, Prakash A, Gogoi BB, et al. The Importance of Flexion MRI in Hirayama Disease with Special Reference to Laminodural Space Measurements. AJNR Am J Neuroradiol. 2018;39(5):974-80. doi: 10.3174/ajnr.A5577.
Turner MR, Barohn RJ, Corcia P, et al; Delegates of the 2nd International PLS Conference. Primary lateral sclerosis: consensus diagnostic criteria. J Neurol Neurosurg Psychiatry. 2020;91(4):373-7. doi: 10.1136/jnnp-2019-322541.
Dukic S, McMackin R, Buxo T, et al. Patterned functional network disruption in amyotrophic lateral sclerosis. Hum Brain Mapp. 2019;40(16):4827-4842. doi: 10.1002/hbm.24740.
Gwathmey K. Chronic Inflammatory Demyelinating Polyradiculoneuropathy and Its Variants. Continuum (Minneap Minn). 2020;26(5):1205-23. doi: 10.1212/CON.0000000000000907.
Menon P, Yiannikas C, Kiernan MC, et al. Regional motor cortex dysfunction in amyotrophic lateral sclerosis. Ann Clin Transl Neurol. 2019;6(8):1373-82. doi: 10.1002/acn3.50819.