Infantile hemangioma (IH) is a type of benign tumor that develops during infancy and spontaneously involutes after 1 year of age. Before the introduction of propranolol in 2008, some patients with IH were instructed to wait for the involution without treatment. This long-term follow-up study was conducted to assess the prognosis of East-Asian children with untreated deep or mixed facial IH. Skin sequelae were assessed by comparing images obtained during the patients' first and last visits in our clinic. Possible factors were assessed for their association with IH prognosis. The mean follow-up time was 7.4 years. Among the 48 patients with deep or mixed facial IH, 26 (54%) achieved complete involution without sequelae and 22 encountered various sequelae, including telangiectasia (36.3%), fibrofatty residue (68.2%), and scars (4%). The complete regression rate of deep or mixed IH occurring in the central facial region was significantly lower than for those in the perifacial region (33.3% vs 66.7%, respectively, χ , P = 0.025). Further, the most common sequelae in this area are fibrofatty residue.
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http://dx.doi.org/10.1111/1346-8138.15080 | DOI Listing |
Background: Microhemorrhages and superficial siderosis (SS) have been reported in patients with mild cognitive impairment (MCI) and dementia, especially in the context of Alzheimer's disease (AD) and cerebrovascular disease. Cerebral amyloid angiopathy and small vessel disease (SVD) have both been implicated in microhemorrhages and SS but their prevalence in those with MCI and dementia and their relationship to SVD is unknown.
Method: We conducted a retrospective chart review of patients with MCI or dementia that had undergone MRI scans from 2014 To 2023.
Alzheimers Dement
December 2024
Imaging Genetics Center, Mark and Mary Stevens Neuroimaging & Informatics Institute, University of Southern California, Marina del Rey, CA, USA.
Background: Diffusion MRI (dMRI) metrics of brain microstructure offer valuable insight into Alzheimer's disease (AD) pathology; recent reports have identified dMRI metrics that (1) tightly link with CSF or PET measures of amyloid and tau burden; and (2) mediate the relationship between CSF markers of AD and delayed logical memory performance, commonly impaired in early AD [1,2]. To better localize white matter tract disruption in AD, our BUndle ANalytic (BUAN) [3] tractometry pipeline allows principled use of statistical methods to map factors affecting microstructural metrics along the 3D length of the brain's fiber tracts. Here, we extended BUAN to pool data from multiple scanning protocols/sites - using a new harmonized tractometry approach, based on ComBat [4,5], a widely-used harmonization method modeling variations in multi-site datasets due to site- and scanner-specific effects.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.
Background: Repetitive head impacts (RHI) from contact sports can lead to long-term white matter injury visualized on FLAIR scans as white matter hyperintensities (WMH). The goal of this study was to preliminarily characterize the unique pattern and features of WMH in middle aged- to older adults with remote history of exposure to RHI from contact sports.
Method: 76 participants (38 with substantial RHI, 38 with minimal or no RHI) from the Boston University Alzheimer's Disease Research Center had a FLAIR MRI during their annual study visit.
Background: Evidence for abnormal amyloid-β (Aβ) plaque accumulation is necessary prior to initiating anti-amyloid therapy in early symptomatic Alzheimer's disease (AD). While the clinical trials for lecanemab and related drugs utilized positron emission tomography (PET) to demonstrate brain amyloidosis, current appropriate use recommendations for clinical practice consider PET or cerebrospinal fluid (CSF) biomarkers as satisfactory for this purpose. Here, we present four clinical cases where CSF biomarker results were discordant from amyloid PET, with the potential to result in erroneous treatment targeting.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Background: Cerebral small vessel disease (CSVD), which includes cerebral amyloid angiopathy (CAA) and arteriolosclerosis, often co-occurs with Alzheimer's disease (AD) pathology. The medial temporal lobe (MTL) is susceptible to hosting multiple AD pathologies, such as neurofibrillary tangles (NFTs), amyloid-ß plaques, phospho-Tar-DNA-Binding-Protein-43 (pTDP-43), as well as CSVD. Whether a causal relationship between these pathologies exists remains largely unknown, but one potential linking mechanism is the dysfunction of perivascular clearance.
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