Atrophy patterns in histologic vs clinical groupings of frontotemporal lobar degeneration Export

@article{citeulike:5859321, abstract = {Objective: Predictable patterns of atrophy are associated with the clinical subtypes of frontotemporal dementia (FTD): behavioral variant (bvFTD), semantic dementia (SEMD), and progressive nonfluent aphasia (PNFA). Some studies of pathologic subtypes have also suggested specific atrophy patterns; however, results are inconsistent. Our aim was to test the hypothesis that clinical, but not pathologic, classification (FTD with ubiquitin inclusions [FTD-U] and FTD with tau inclusions [FTD-T]) is associated with predictable patterns of regional atrophy. Methods: Magnetic resonance scans of nine FTD-U and six FTD-T patients (histologically confirmed) were compared with 25 controls using voxel-based morphometry (VBM). Analyses were conducted with the patient group classified according to histologic or clinical variant. Additionally, three Alzheimer pathology patients who had the syndrome of SEMD in life (FTD-A) were analyzed. Results: The VBM studies in clinical variants confirmed established patterns of atrophy (SEMD, rostral temporal; bvFTD, mesial frontal; PNFA, left insula). FTD-U and FTD-T VBM results were very similar, showing severe atrophy in the temporal poles, mesial frontal lobe, and insulae. A conjunction analysis confirmed this similarity. Subgroup analysis found that SEMD associated with either FTD-T or FTD-U was associated with similar rostral temporal atrophy; however, FTD-A had a qualitatively different pattern of left hippocampal atrophy. Conclusions: While there is predictable atrophy for clinical variants of frontotemporal dementia (FTD), histologic FTD variants show no noticeable differences. Reports of specific atrophy profiles are likely the result of idiosyncrasies in small groups. Semantic dementia associated with Alzheimer pathology, however, presented a distinct atrophy pattern. 10.1212/WNL.0b013e3181a55fa2}, author = {Pereira, J. M. S. and Williams, G. B. and Acosta-Cabronero, J. and Pengas, G. and Spillantini, M. G. and Xuereb, J. H. and Hodges, J. R. and Nestor, P. J.}, citeulike-article-id = {5859321}, citeulike-linkout-0 = {http://dx.doi.org/10.1212/WNL.0b013e3181a55fa2}, citeulike-linkout-1 = {http://www.neurology.org/content/72/19/1653.abstract}, citeulike-linkout-2 = {http://www.neurology.org/content/72/19/1653.full.pdf}, citeulike-linkout-3 = {http://view.ncbi.nlm.nih.gov/pubmed/19433738}, citeulike-linkout-4 = {http://www.hubmed.org/display.cgi?uids=19433738}, day = {12}, doi = {10.1212/WNL.0b013e3181a55fa2}, journal = {Neurology}, month = {May}, number = {19}, pages = {1653--1660}, posted-at = {2009-09-30 10:59:17}, priority = {0}, title = {Atrophy patterns in histologic vs clinical groupings of frontotemporal lobar degeneration}, url = {http://dx.doi.org/10.1212/WNL.0b013e3181a55fa2}, volume = {72}, year = {2009} }

TY - JOUR ID - citeulike:5859321 L3 - citeulike-article-id:5859321 N2 - Objective: Predictable patterns of atrophy are associated with the clinical subtypes of frontotemporal dementia (FTD): behavioral variant (bvFTD), semantic dementia (SEMD), and progressive nonfluent aphasia (PNFA). Some studies of pathologic subtypes have also suggested specific atrophy patterns; however, results are inconsistent. Our aim was to test the hypothesis that clinical, but not pathologic, classification (FTD with ubiquitin inclusions [FTD-U] and FTD with tau inclusions [FTD-T]) is associated with predictable patterns of regional atrophy. Methods: Magnetic resonance scans of nine FTD-U and six FTD-T patients (histologically confirmed) were compared with 25 controls using voxel-based morphometry (VBM). Analyses were conducted with the patient group classified according to histologic or clinical variant. Additionally, three Alzheimer pathology patients who had the syndrome of SEMD in life (FTD-A) were analyzed. Results: The VBM studies in clinical variants confirmed established patterns of atrophy (SEMD, rostral temporal; bvFTD, mesial frontal; PNFA, left insula). FTD-U and FTD-T VBM results were very similar, showing severe atrophy in the temporal poles, mesial frontal lobe, and insulae. A conjunction analysis confirmed this similarity. Subgroup analysis found that SEMD associated with either FTD-T or FTD-U was associated with similar rostral temporal atrophy; however, FTD-A had a qualitatively different pattern of left hippocampal atrophy. Conclusions: While there is predictable atrophy for clinical variants of frontotemporal dementia (FTD), histologic FTD variants show no noticeable differences. Reports of specific atrophy profiles are likely the result of idiosyncrasies in small groups. Semantic dementia associated with Alzheimer pathology, however, presented a distinct atrophy pattern. 10.1212/WNL.0b013e3181a55fa2 IS - 19 JF - Neurology EP - 1660 TI - Atrophy patterns in histologic vs clinical groupings of frontotemporal lobar degeneration VL - 72 SP - 1653 AU - Pereira, JMS AU - Williams, GB AU - Acosta-Cabronero, J AU - Pengas, G AU - Spillantini, MG AU - Xuereb, JH AU - Hodges, JR AU - Nestor, PJ PY - 2009/05/12/ UR - http://dx.doi.org/10.1212/WNL.0b013e3181a55fa2 ER -