ArticleNeuroradiology2025
The cortical high-flow sign in oligodendroglioma, IDH-mutant and 1p/19q-codeleted is correlated with histological cortical vascular density.
Article in Neuroradiology, 2025. 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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3 citing papers in PubMed.
- Imaging diagnosis of adult-type diffuse gliomas in the era of WHO CNS5 and cIMPACT-NOW updates 8-11: a narrative review.Japanese journal of radiology · 2026Review
- Time-intensity Profiles and T1-corrected Arterial Transit Time from Multi-delay Pseudo-continuous ASL with a Variable-TR Scheme for the Characterization of Adult-type Diffuse Glioma.Clinical neuroradiology · 2026Article
- The diagnostic value of cortical high-flow sign combined with cystathionine onNeuroradiology · 2026Article
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13 authors.
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Abstract
background and purposeThe cortical high-flow sign has been more commonly reported in oligodendroglioma, IDH-mutant and 1p/19q-codeleted (ODG IDHm-codel) compared to diffuse glioma with IDH-wildtype or astrocytoma, IDH-mutant. Besides tumor types, higher grades of glioma might also contribute to the cortical high flow. Therefore, we investigated whether the histological cortical vascular density or CNS WHO grade was associated with the cortical high-flow sign in patients with ODG IDHm-codel. MATERIALS AND
methodsThis retrospective study consisted of pathologically confirmed 25 adult patients with ODG IDHm-codel. We implemented pseudo-continuous arterial spin labeling technique with background suppression. Subtraction images were generated from paired control and label images. Tumor-affecting cortices without intense contrast enhancement on conventional MR imaging were targeted for the determination of the cortical high-flow sign. Immunohistochemical staining of CD31 antibody was performed for the identification of vascular endothelial cells. A microscopic field of the most intense vascularization was captured in each specimen. The vessel number and the relative vascular density (%Vessel) were compared between the positive cortical high-flow sign (CHFS
resultsThe vessel number and %Vessel were higher in patients with the CHFS
conclusionThe cortical high-flow sign on ASL, which is more commonly found in ODG IDHm-codel than in diffuse glioma with IDH-wildtype or astrocytoma, is associated with the histological cortical vascular density in patients with ODG IDHm-codel.
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