Highlights
- •Hummingbird sign is the midbrain atrophy without pontine atrophy.
- •Hummingbird sign was originally described in progressive supranuclear palsy.
- •Hummingbird sign has already been reported in Fragile X tremor-ataxia syndrome.
- •Fragile X tremor-ataxia syndrome can phenotypically mimic progressive supranuclear palsy.
Keywords
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References
- Fragile X-associated tremor/ataxia syndrome - features, mechanisms and management.Nat. Rev. Neurol. 2016; 12: 403-412https://doi.org/10.1038/nrneurol.2016.82
- The diagnostic accuracy of the hummingbird and morning glory sign in patients with neurodegenerative parkinsonism.Parkinsonism Relat. Disord. 2018; 54: 90-94https://doi.org/10.1016/j.parkreldis.2018.04.005
- Middle cerebellar peduncle width—a novel MRI biomarker for FXTAS?.Front. Neurosci. 2018; 12379https://doi.org/10.3389/fnins.2018.00379
- MRI and SPECT of midbrain and striatal degeneration in fragile X-associated tremor/ataxia syndrome.J. Neurol. 2008; 255: 144-146https://doi.org/10.1007/s00415-007-0711-8
- Parkinsonism in fragile X-associated tremor/ataxia syndrome (FXTAS): revisited.Parkinsonism Relat. Disord. 2014; 20: 456-459https://doi.org/10.1016/j.parkreldis.2014.01.006
Article Info
Publication History
Published online: June 20, 2019
Received in revised form:
June 12,
2019
Received:
May 6,
2019
Identification
Copyright
© 2019 Elsevier B.V. All rights reserved.
