{"title":"Dynamic aphasia as an early sign of corticobasal degeneration: Clinico-radio-pathological correlation","authors":"Masanori Kurihara , Akira Arakawa , Aya Midori Tokumaru , Tomoyasu Matsubara , Hiroto Eguchi , Yasushi Shimo , Masato Hasegawa , Kazutomi Kanemaru , Katsuhiko Takeda , Atsushi Iwata , Shigeo Murayama , Yuko Saito","doi":"10.1016/j.ensci.2024.100526","DOIUrl":null,"url":null,"abstract":"<div><p>A 72-year-old man presented with a 6-month history of decreased voluntary speech. Sparse speech and decreased word fluency were observed. Articulation, naming, comprehension, and repetition were preserved. Agrammatism and paraphasia were not observed. These characteristics matched those reported as dynamic aphasia. Other findings were mild behavioral symptoms, recent memory impairment, and right hemiparkinsonism. The patient‘s voluntary speech continued to reduce and behavioral symptoms progressed. Brain MRI including voxel-based morphometric analysis showed left-dominant white matter volume reduction in the frontal lobe including those between the left supplementary motor area (SMA)/preSMA and the frontal operculum, likely involving the frontal aslant tract (FAT). The patient became completely mute after two years from disease onset and died of aspiration pneumonia. The neuropathological diagnosis was corticobasal degeneration (CBD). This case suggests that dynamic aphasia may be the initial sign of CBD and that early involvement of left FAT may be responsible for this feature.</p></div>","PeriodicalId":37974,"journal":{"name":"eNeurologicalSci","volume":"37 ","pages":"Article 100526"},"PeriodicalIF":0.0000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405650224000339/pdfft?md5=470e69884011f9416ef222cc17438085&pid=1-s2.0-S2405650224000339-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"eNeurologicalSci","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2405650224000339","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Neuroscience","Score":null,"Total":0}
引用次数: 0
Abstract
A 72-year-old man presented with a 6-month history of decreased voluntary speech. Sparse speech and decreased word fluency were observed. Articulation, naming, comprehension, and repetition were preserved. Agrammatism and paraphasia were not observed. These characteristics matched those reported as dynamic aphasia. Other findings were mild behavioral symptoms, recent memory impairment, and right hemiparkinsonism. The patient‘s voluntary speech continued to reduce and behavioral symptoms progressed. Brain MRI including voxel-based morphometric analysis showed left-dominant white matter volume reduction in the frontal lobe including those between the left supplementary motor area (SMA)/preSMA and the frontal operculum, likely involving the frontal aslant tract (FAT). The patient became completely mute after two years from disease onset and died of aspiration pneumonia. The neuropathological diagnosis was corticobasal degeneration (CBD). This case suggests that dynamic aphasia may be the initial sign of CBD and that early involvement of left FAT may be responsible for this feature.
期刊介绍:
eNeurologicalSci provides a medium for the prompt publication of original articles in neurology and neuroscience from around the world. eNS places special emphasis on articles that: 1) provide guidance to clinicians around the world (Best Practices, Global Neurology); 2) report cutting-edge science related to neurology (Basic and Translational Sciences); 3) educate readers about relevant and practical clinical outcomes in neurology (Outcomes Research); and 4) summarize or editorialize the current state of the literature (Reviews, Commentaries, and Editorials). eNS accepts most types of manuscripts for consideration including original research papers, short communications, reviews, book reviews, letters to the Editor, opinions and editorials. Topics considered will be from neurology-related fields that are of interest to practicing physicians around the world. Examples include neuromuscular diseases, demyelination, atrophies, dementia, neoplasms, infections, epilepsies, disturbances of consciousness, stroke and cerebral circulation, growth and development, plasticity and intermediary metabolism. The fields covered may include neuroanatomy, neurochemistry, neuroendocrinology, neuroepidemiology, neurogenetics, neuroimmunology, neuroophthalmology, neuropathology, neuropharmacology, neurophysiology, neuropsychology, neuroradiology, neurosurgery, neurooncology, neurotoxicology, restorative neurology, and tropical neurology.