Uncovering clinical and radiological asymmetry in progressive supranuclear palsy-Richardson's syndrome.
Neurol Sci
; 43(6): 3677-3682, 2022 Jun.
Article
in En
| MEDLINE
| ID: mdl-35106692
ABSTRACT
BACKGROUND:
Richardson's syndrome (RS) is considered the most symmetric phenotype of progressive supranuclear palsy (PSP) as opposed to PSP with predominant corticobasal syndrome (PSP-CBS) or parkinsonism (PSP-P).OBJECTIVES:
Evaluate asymmetrical motor and higher cortical features in probable PSP-RS and compare the degree of asymmetry of cortical lobes and hemispheres between PSP-RS, PSP-CBS, PSP-P, and age-matched healthy controls (HC).METHODS:
Asymmetry of motor and higher cortical features evaluated with an extensive videotaped neurologic examination was investigated in 28 PSP-RS, 8 PSP-CBS, and 14 PSP-P. Brain MRI to compute the laterality index (LI) was performed in 36 patients as well as in 56 HC.RESULTS:
In PSP-RS, parkinsonism was the most common asymmetric motor feature (53.6%), followed by dystonia and myoclonus (21.4% and 17.9%, respectively). Among higher cortical features, limb apraxia was found asymmetric in about one-third of patients. PSP-RS disclosed higher LI for hemispheres compared to HC, indicating a greater degree of asymmetry (p = 0.003). The degree of asymmetry of clinical features was not different between PSP-RS and those qualifying for PSP-CBS or PSP-P. As for imaging, LI was not different between PSP-RS, PSP-CBS, and PSP-P in any cortical region.CONCLUSIONS:
Motor and higher cortical features are asymmetric in up to 50% of PSP-RS who also present a greater degree of asymmetry in hemispheres compared to age-matched HC. Lateralization of clinical features should be annotated in PSP.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Apraxias
/
Supranuclear Palsy, Progressive
/
Parkinsonian Disorders
Limits:
Humans
Language:
En
Journal:
Neurol Sci
Journal subject:
NEUROLOGIA
Year:
2022
Document type:
Article
Affiliation country:
Italy