Reduced Diffusion in Neurocysticercosis: Circumstances of Appearance and Possible Natural History Implications

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dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorSANTOS, G. T.
dc.contributor.authorLEITE, C. C.
dc.contributor.authorMACHADO, L. R.
dc.contributor.authorMCKINNEY, A. M.
dc.contributor.authorLUCATO, L. T.
dc.date.accessioned2014-04-25T21:50:51Z
dc.date.available2014-04-25T21:50:51Z
dc.date.issued2013
dc.description.abstractBACKGROUND AND PURPOSE: Few studies discuss DWI findings in patients with NCC, and their conclusions are variable and contradictory. The aim of our study was to describe DWI findings of a cohort of patients with NCC, emphasizing the frequency of reduced diffusion. MATERIALS AND METHODS: This retrospective study included 48 patients with NCC. Two neuroradiologists analyzed MR images regarding location, number, and stage of NCC lesions. On the basis of visual analysis, they defined, by consensus, the presence of high signal within NCC lesions on DWI and measured their ADC values when feasible. RESULTS: The total number of lesions was 342: parenchymal (263), subarachnoid (65), and intraventricular (14); 83 were DWI hyperintense. The first pattern was a small eccentric hyperintense dot/curvilinear structure on DWI (representing the scolex) noted in intraparenchymal lesions in vesicular (41 lesions, 29%) and colloidal vesicular (18 lesions, 19%) stages, in 14 (22%) subarachnoid lesions, and 2 (14%) intraventricular lesions; rADC calculations were hampered by the intrinsic small dimensions of this finding. The second pattern was the presence of total/subtotal DWI hyperintensity in intraparenchymal lesions, 5 in the colloidal vesicular stage (5%) and 1 in the granular nodular phase (3%). Two subarachnoid lesions also showed the same presentation; in this second pattern, reduced diffusion was present in different degrees, measured by rADC calculations. CONCLUSIONS: DWI may identify the scolex, increasing diagnostic confidence for NCC. Total/subtotal DWI hyperintensity, related to the stage of the lesion, though uncommon, allows including NCC as a consideration in the differential diagnosis of lesions with reduced diffusion and ring enhancement.
dc.description.indexMEDLINE
dc.identifier.citationAMERICAN JOURNAL OF NEURORADIOLOGY, v.34, n.2, p.310-316, 2013
dc.identifier.doi10.3174/ajnr.A3198
dc.identifier.eissn1936-959X
dc.identifier.issn0195-6108
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/5116
dc.language.isoeng
dc.publisherAMER SOC NEURORADIOLOGY
dc.relation.ispartofAmerican Journal of Neuroradiology
dc.rightsrestrictedAccess
dc.rights.holderCopyright AMER SOC NEURORADIOLOGY
dc.subject.othercystic mass lesions
dc.subject.otherdifferential-diagnosis
dc.subject.otherbrain-abscess
dc.subject.othermanifestations
dc.subject.otherdiscrimination
dc.subject.othersequences
dc.subject.othersignal
dc.subject.othertumors
dc.subject.otherct
dc.subject.wosClinical Neurology
dc.subject.wosNeuroimaging
dc.subject.wosRadiology, Nuclear Medicine & Medical Imaging
dc.titleReduced Diffusion in Neurocysticercosis: Circumstances of Appearance and Possible Natural History Implications
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.affiliation.countryEstados Unidos
hcfmusp.affiliation.countryisous
hcfmusp.author.externalSANTOS, G. T.:Univ Sao Paulo, Sch Med, Clin Hosp, Dept Radiol, Sao Paulo, Brazil
hcfmusp.author.externalMCKINNEY, A. M.:Univ Minnesota, Dept Radiol Neuroradiol, Minneapolis, MN USA
hcfmusp.citation.scopus21
hcfmusp.contributor.author-fmusphcCLAUDIA DA COSTA LEITE
hcfmusp.contributor.author-fmusphcLUIS DOS RAMOS MACHADO
hcfmusp.contributor.author-fmusphcLEANDRO TAVARES LUCATO
hcfmusp.description.beginpage310
hcfmusp.description.endpage316
hcfmusp.description.issue2
hcfmusp.description.volume34
hcfmusp.origemWOS
hcfmusp.origem.pubmed22821919
hcfmusp.origem.scopus2-s2.0-84876162126
hcfmusp.origem.wosWOS:000329210300014
hcfmusp.publisher.cityDENVILLE
hcfmusp.publisher.countryUSA
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