Characteristics of stroke-like lesions on cerebral imaging.

Stroke-szerű laesiók jellegzetességei agyi képalkotó vizsgálatokkal.

Journal

Ideggyogyaszati szemle
ISSN: 0019-1442
Titre abrégé: Ideggyogy Sz
Pays: Hungary
ID NLM: 17510500R

Informations de publication

Date de publication:
30 Jan 2023
Historique:
entrez: 9 3 2023
pubmed: 10 3 2023
medline: 14 3 2023
Statut: ppublish

Résumé

<p><strong>Objective</strong> &ndash; Stroke-like lesions (SLLs) are pathognomonic for mitochondrial ence&shy;pha&shy;lopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome but occur in other mitochondrial and non-mitochondrial disorders as well. This mini-review aims at summarising and discussing recent findings to open up future perspectives how to manage this fleeting phenomenon.<br><strong>Results </strong>&ndash;<strong> </strong>Typically, SLLs are dynamic lesions, which increase in size and intensity to regress after a nadir. SLLs are incongruent with a vascular territory, originate frequently from the cortex to spread subcortically, can be monofocal or multifocal, run through an acute (attack) and chronic (remission) stage, and may either completely disappear or end up as laminar cortical necrosis, white matter lesion, subcortical atrophy, cyst, or the toenail sign. On cerebral CT, SLLs are hypodense. SLLs can be best visualized on multimodal MRI showing up as hyperintensity on T2, FLAIR, DWI, and PWI, and as hypointensity on OEF-MRI. On MR-spectroscopy, SLLs typically present with a decreased N-acetyl-aspartate peak and an increased lactate peak. DTI in acute SLLs reveals reduced connectivity, increased global efficiency, and reduced focal efficiency. Tc-HMPAO SPECT of SLLs indicates hyperperfusion and L-iomazenil SPECT reduced tracer uptake. FDG-PET typically shows hypometabolism within a SLL.<br><strong>Conclusion</strong> &ndash; SLLs present with typical findings on various imaging modalities but the combination of cerebral CT, multimodal MRI, MRS, and PET clearly delineate a SLL from other acute or chronic cerebral lesions.&nbsp;</p>. <p><strong>C&eacute;lkitűz&eacute;s</strong> - A stroke-szerű laesi&oacute;k (stroke-like lesion, SLL) a mitochondrialis encephalopathia, a tejsavas acid&oacute;zis &eacute;s a stroke-szerű epiz&oacute;d szindr&oacute;ma (stroke-like episodes syndrome, MELAS) jellegzetess&eacute;gei, de egy&eacute;b mitochondrialis &eacute;s nem mitochondrialis betegs&eacute;gekben is előfordulnak. R&ouml;vid &aacute;ttekint&eacute;sem az SLL-ekkel kapcsolatos leg&uacute;jabb eredm&eacute;nyek t&aacute;rgyalja &eacute;s foglalja &ouml;ssze abb&oacute;l a c&eacute;lb&oacute;l, hogy bemutassa, a j&ouml;vőben hogyan lehet majd menedzselni ezt a v&aacute;ltozatos jelens&eacute;get.<br><strong>Eredm&eacute;nyek</strong> - Az SLL-ek tipikus form&aacute;jukban dinamikus laesi&oacute;k, amiknek elősz&ouml;r nő a m&eacute;ret&uuml;k &eacute;s az intenzit&aacute;suk, majd egy maximum el&eacute;r&eacute;se ut&aacute;n regredi&aacute;lnak. Kialakul&aacute;suk nem mutat szoros &ouml;sszef&uuml;gg&eacute;st az erek ell&aacute;t&aacute;si ter&uuml;let&eacute;vel, gyakran k&eacute;rgi eredetűek &eacute;s subcorticalisan terjednek, mono- &eacute;s multifok&aacute;lisak egyar&aacute;nt lehetnek, akut &eacute;s kr&oacute;nikus f&aacute;zisuk is van (roham, majd remisszi&oacute;), lehets&eacute;ges, hogy teljesen felsz&iacute;v&oacute;dnak, de olyan is van, ami laminaris corticalis necrosissal, feh&eacute;r&aacute;llom&aacute;ny-laesi&oacute;val, subcorticalis atr&oacute;fi&aacute;val, cystakialakul&aacute;ssal vagy toenail-jel kialakul&aacute;s&aacute;val v&eacute;gződik. Az agyi CT-felv&eacute;telen az SLL-ek hypodensitask&eacute;nt &aacute;br&aacute;zol&oacute;dnak. Legjobban multimod&aacute;lis MR-felv&eacute;telen vizualiz&aacute;lhat&oacute;k, T2-, FLAIR-, DWI- &eacute;s PWI-hiperintenzit&aacute;sk&eacute;nt, valamint OEF-MR-hipointenzit&aacute;sk&eacute;nt. MR-spektoszk&oacute;pos felv&eacute;telen az SLL tipikusan cs&ouml;kkent N-acetil-aszpart&aacute;t-cs&uacute;ccsal &eacute;s megn&ouml;vekedett lakt&aacute;tcs&uacute;ccsal jelentkezik. A DTI akut SLL eset&eacute;n cs&ouml;kkent konnektivit&aacute;st, megn&ouml;vekedett glob&aacute;lis effektivit&aacute;st &eacute;s cs&ouml;kkent fok&aacute;lis effektivit&aacute;st mutat. Az SLL Tc-HMPAO SPECT-vizsg&aacute;lata hiperperf&uacute;zi&oacute;t jelez, m&iacute;g az L-iomazenil SPECT-vizsg&aacute;lat cs&ouml;kkent tracer-felv&eacute;telt. Az FDG-PET-vizsg&aacute;lat &aacute;ltal&aacute;ban az SLL-en bel&uuml;li hipometabolizmust mutatja.<br><strong>K&ouml;vetkeztet&eacute;s </strong>-<strong> </strong>Az SLL a k&uuml;l&ouml;nb&ouml;ző k&eacute;palkot&oacute; modalit&aacute;sokra tipikus jellegzetess&eacute;gekkel &aacute;br&aacute;zol&oacute;dik, de az agyi CT, a multimod&aacute;lis MR, az MR-spektroszk&oacute;pia &eacute;s a PET kombin&aacute;ci&oacute;ja r&eacute;v&eacute;n pontosan elk&uuml;l&ouml;n&iacute;thető a t&ouml;bbi akut vagy kr&oacute;nikus cerebralis laesi&oacute;t&oacute;l.</p>.

Autres résumés

Type: Publisher (hun)
<p><strong>C&eacute;lkitűz&eacute;s</strong> - A stroke-szerű laesi&oacute;k (stroke-like lesion, SLL) a mitochondrialis encephalopathia, a tejsavas acid&oacute;zis &eacute;s a stroke-szerű epiz&oacute;d szindr&oacute;ma (stroke-like episodes syndrome, MELAS) jellegzetess&eacute;gei, de egy&eacute;b mitochondrialis &eacute;s nem mitochondrialis betegs&eacute;gekben is előfordulnak. R&ouml;vid &aacute;ttekint&eacute;sem az SLL-ekkel kapcsolatos leg&uacute;jabb eredm&eacute;nyek t&aacute;rgyalja &eacute;s foglalja &ouml;ssze abb&oacute;l a c&eacute;lb&oacute;l, hogy bemutassa, a j&ouml;vőben hogyan lehet majd menedzselni ezt a v&aacute;ltozatos jelens&eacute;get.<br><strong>Eredm&eacute;nyek</strong> - Az SLL-ek tipikus form&aacute;jukban dinamikus laesi&oacute;k, amiknek elősz&ouml;r nő a m&eacute;ret&uuml;k &eacute;s az intenzit&aacute;suk, majd egy maximum el&eacute;r&eacute;se ut&aacute;n regredi&aacute;lnak. Kialakul&aacute;suk nem mutat szoros &ouml;sszef&uuml;gg&eacute;st az erek ell&aacute;t&aacute;si ter&uuml;let&eacute;vel, gyakran k&eacute;rgi eredetűek &eacute;s subcorticalisan terjednek, mono- &eacute;s multifok&aacute;lisak egyar&aacute;nt lehetnek, akut &eacute;s kr&oacute;nikus f&aacute;zisuk is van (roham, majd remisszi&oacute;), lehets&eacute;ges, hogy teljesen felsz&iacute;v&oacute;dnak, de olyan is van, ami laminaris corticalis necrosissal, feh&eacute;r&aacute;llom&aacute;ny-laesi&oacute;val, subcorticalis atr&oacute;fi&aacute;val, cystakialakul&aacute;ssal vagy toenail-jel kialakul&aacute;s&aacute;val v&eacute;gződik. Az agyi CT-felv&eacute;telen az SLL-ek hypodensitask&eacute;nt &aacute;br&aacute;zol&oacute;dnak. Legjobban multimod&aacute;lis MR-felv&eacute;telen vizualiz&aacute;lhat&oacute;k, T2-, FLAIR-, DWI- &eacute;s PWI-hiperintenzit&aacute;sk&eacute;nt, valamint OEF-MR-hipointenzit&aacute;sk&eacute;nt. MR-spektoszk&oacute;pos felv&eacute;telen az SLL tipikusan cs&ouml;kkent N-acetil-aszpart&aacute;t-cs&uacute;ccsal &eacute;s megn&ouml;vekedett lakt&aacute;tcs&uacute;ccsal jelentkezik. A DTI akut SLL eset&eacute;n cs&ouml;kkent konnektivit&aacute;st, megn&ouml;vekedett glob&aacute;lis effektivit&aacute;st &eacute;s cs&ouml;kkent fok&aacute;lis effektivit&aacute;st mutat. Az SLL Tc-HMPAO SPECT-vizsg&aacute;lata hiperperf&uacute;zi&oacute;t jelez, m&iacute;g az L-iomazenil SPECT-vizsg&aacute;lat cs&ouml;kkent tracer-felv&eacute;telt. Az FDG-PET-vizsg&aacute;lat &aacute;ltal&aacute;ban az SLL-en bel&uuml;li hipometabolizmust mutatja.<br><strong>K&ouml;vetkeztet&eacute;s </strong>-<strong> </strong>Az SLL a k&uuml;l&ouml;nb&ouml;ző k&eacute;palkot&oacute; modalit&aacute;sokra tipikus jellegzetess&eacute;gekkel &aacute;br&aacute;zol&oacute;dik, de az agyi CT, a multimod&aacute;lis MR, az MR-spektroszk&oacute;pia &eacute;s a PET kombin&aacute;ci&oacute;ja r&eacute;v&eacute;n pontosan elk&uuml;l&ouml;n&iacute;thető a t&ouml;bbi akut vagy kr&oacute;nikus cerebralis laesi&oacute;t&oacute;l.</p>.

Identifiants

pubmed: 36892301
doi: 10.18071/isz.76.0005
doi:

Types de publication

Journal Article Review

Langues

eng

Sous-ensembles de citation

IM

Pagination

5-10

Auteurs

Josef Finsterer (J)

Neurology and Neurophysiology Center, Vienna, Austria.

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Classifications MeSH