ReviewThe neuroradiology journal2021
Delayed leukoencephalopathy from suspected polymer embolism after neuroendovascular procedures.
Review in The neuroradiology journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Delayed non ischemic cerebral enhancing lesions after endovascular stent assisted coiling of an unruptured intracranial aneurysm, a case description followed by a literature analysis on the probable causes, differential diagnosis and treatment.Quantitative imaging in medicine and surgery · 2025Article
- Cerebral foreign body reaction (CFBR) after endovascular treatments is a rare event to be aware of: case series and review of literature.Journal of neurology · 2025Review
- Incidence, clinical spectrum, and immunotherapy of non-ischemic cerebral enhancing lesions after endovascular therapy.Therapeutic advances in neurological disorders · 2022Article
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Authors and funding
5 authors.
Funding
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Abstract
As the neurointervention field grows, a new side effect emerges. Delayed leukoencephalopathy (DL) is believed to be an inflammatory or allergic reaction to polymer material that is shed from catheters during endovascular procedures. We present four cases of DL after aneurysm treatment in two patients, endovascular stroke treatment and diagnostic arteriography. We present our diagnostic process, including biopsy results in two patients, our anti-inflammatory treatment and outcomes together with a review of the literature. In our series, prognosis was variable with ongoing seizures in two patients. Our literature review reveals that asymptomatic shedding of polymer material is common, occurring in a third of endovascular stroke procedures, whereas symptomatic DL occurs in <0.5% of therapeutic neuroendovascular procedures. Clinicians should be aware of this rare complication, and oral glucocorticoids seem to be a reasonable first-line treatment strategy.
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