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Schön M, Oliveira Santos M, Gromicho M, Pinto S, Swash M, de Carvalho M. Wasted leg syndrome: An atypical slowly-progressive form of lower motor neuron disease. Rev Neurol (Paris) 2023; 179:114-117. [PMID: 36473746 DOI: 10.1016/j.neurol.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 12/12/2022]
Abstract
We describe four male patients with wasted-leg syndrome, with predominant asymmetric thigh atrophy and weakness that stabilized after a period of slow progression (follow-up 7-18 years). Two patients had an Indian ethnic background and two were Portuguese, without known Indian ancestry. Other mimicking disorders were excluded, but one Indian patient was later diagnosed with CADASIL. Electromyography (EMG) revealed severe chronic neurogenic changes in proximal leg muscles, and mild changes in distal leg muscles, but EMG of the upper limbs was normal. Upper motor neuron signs were absent clinically and on transcranial magnetic stimulation. This seems to represent a variant of the common wasted-leg syndrome presentation.
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Affiliation(s)
- M Schön
- Serviço de Neurologia, Departamento de Neurociências e de Saúde Mental, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
| | - M Oliveira Santos
- Serviço de Neurologia, Departamento de Neurociências e de Saúde Mental, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal; IMM, Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - M Gromicho
- IMM, Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - S Pinto
- IMM, Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - M Swash
- IMM, Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Departments of Neurology and Neuroscience, Barts and the London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - M de Carvalho
- Serviço de Neurologia, Departamento de Neurociências e de Saúde Mental, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal; IMM, Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.
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