2021
DOI: 10.2169/internalmedicine.6371-20
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Temporal Changes in Brain Magnetic Resonance Imaging Findings over 16 Years in a Patient with Neuronal Intranuclear Inclusion Disease

Abstract: Leukoencephalopathy with high-intensity signals in the corticomedullary junction on diffusion-weighted imaging (DWI) is a diagnostic hallmark for neuronal intranuclear inclusion disease (NIID). We herein report a 65-year-old man who developed dementia and was diagnosed with NIID 2 years later. Of note, he had coincidentally undergone brain magnetic resonance imaging 14 and 10 years before the onset of dementia. No abnormalities were discerned on DWI on either of these occasions, but high-intensity signals in t… Show more

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Cited by 5 publications
(5 citation statements)
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“…Nine cases of this pattern were observed in the literature (16-18). According to Tamura et al (19), one NIID patient's DWIs were negative for the first 4 years before showing high signals in the CMJ of the bilateral frontal-parietal lobes. We suppose that among NIID individuals, this may be the traditional longitudinal DWI pattern.…”
Section: Discussionmentioning
confidence: 97%
“…Nine cases of this pattern were observed in the literature (16-18). According to Tamura et al (19), one NIID patient's DWIs were negative for the first 4 years before showing high signals in the CMJ of the bilateral frontal-parietal lobes. We suppose that among NIID individuals, this may be the traditional longitudinal DWI pattern.…”
Section: Discussionmentioning
confidence: 97%
“…Despite the majority of sporadic NIID cases showed regionally decreased cerebral blood flow of the frontal, parietal, precuneous, and posterior cingulate cortices on single-photon computed emission tomography (SPECT) [7,18,19], a few cases carried out positron emission tomography/computed tomography (PET/CT) with 18 F-FDG to explore the brain metabolism. In a sporadic adult-onset NIID case predominantly with dementia and gait disturbance, 18 F-FDG PET/CT demonstrated glucose hypometabolism in bilateral cerebral hemisphere, especially in the frontoparietal cortex, wider than the range of leukoencephalopathy on MRI [20].…”
Section: Discussionmentioning
confidence: 99%
“…Patient 2 had a typical DWI high signal at the junction of the cortex and medulla more than 2 years after onset and continued to exhibit typical imaging manifestations until 5 years after the course of the disease. An imaging observation study that tracked a patient for 16 years found that the patient's initial T2 FLAIR images showed spatial high-intensity lesions in the subcortical white matter, while DWI showed no specific abnormalities ( 15 ). It took 16 years to develop leucoencephalopathy on T2 FLAIR images, and the high-intensity signal in the corticomedullary junction on DWI had gradually expanded after symptom onset.…”
Section: Discussionmentioning
confidence: 99%