2022
Spectrum of qualitative and quantitative imaging of pilomyxoid, intermediate pilomyxoid and pilocytic astrocytomas in relation to their genetic alterations
Fadel SA, von Reppert M, Kazarian E, Omay EZE, Marks A, Linder N, Hoffmann KT, Darbinyan A, Huttner A, Aboian MS. Spectrum of qualitative and quantitative imaging of pilomyxoid, intermediate pilomyxoid and pilocytic astrocytomas in relation to their genetic alterations. Neuroradiology 2022, 65: 195-205. PMID: 35984480, DOI: 10.1007/s00234-022-03027-3.Peer-Reviewed Original ResearchMeSH KeywordsAstrocytomaBrain NeoplasmsChildHumansMutationProto-Oncogene Proteins B-rafRetrospective StudiesConceptsPilocytic astrocytomaImaging characteristicsADC valuesAggressive imaging characteristicsSuprasellar pilocytic astrocytomaRecurrence/progressionPediatric brain tumorsFrontal white matterWhole-exome sequencingPilomyxoid astrocytomaIntraventricular extensionSuprasellar regionThird ventriclePosterior fossaAtypical locationBrain tumorsWhite matterGrade 1TumorsAstrocytomasDriver mutationsExome sequencingGenetic alterationsPatientsHippocampus
2021
Hemorrhage Into a Subependymal Giant Cell Astrocytoma in an Adult With Tuberous Sclerosis
Barbiero FJ, Huttner AJ, Fulbright RK, Baehring JM. Hemorrhage Into a Subependymal Giant Cell Astrocytoma in an Adult With Tuberous Sclerosis. The Neurologist 2021, 26: 122-124. PMID: 34190204, DOI: 10.1097/nrl.0000000000000338.Peer-Reviewed Original ResearchConceptsIntracranial hemorrhageMagnetic resonance imaging (MRI) brainSubependymal giant cell astrocytomaCentral nervous system tumorsYoung adultsLife-threatening complicationsGiant cell astrocytomaNervous system tumorsTuberous sclerosis complexForamen of MonroRare genetic disorderGerm-line mutationsUncommon causeHematoma evacuationDiagnostic delaySpontaneous hemorrhageUnusual causeSubependymal nodulesSurveillance imagingSkin changesTumor resectionSystem tumorsAdenoma sebaceumTuberous sclerosisSkin lesionsDual activating FGFR1 mutations in pediatric pilomyxoid astrocytoma
Fomchenko EI, Reeves BC, Sullivan W, Marks AM, Huttner A, Kahle KT, Erson‐Omay E. Dual activating FGFR1 mutations in pediatric pilomyxoid astrocytoma. Molecular Genetics & Genomic Medicine 2021, 9: e1597. PMID: 33448156, PMCID: PMC8077124, DOI: 10.1002/mgg3.1597.Peer-Reviewed Original ResearchMeSH KeywordsAstrocytomaBrain NeoplasmsHumansInfantMaleMutation, MissenseReceptor, Fibroblast Growth Factor, Type 1ConceptsPilomyxoid astrocytomaPediatric patientsVariant allele frequencyHypothalamic/chiasmatic regionPathologic tissue diagnosisTreatment-related morbidityHigh recurrence ratePI3K/mTOR inhibitionYears of ageExome sequencing resultsSimilar time pointsWhole exome sequencing resultsHypothalamic dysfunctionClinical presentationSurgical managementRecurrence rateShorter survivalAggressive subtypeVision lossChiasmatic regionTissue diagnosisPatient tumorsRadiation therapyFGFR inhibitorsFGFR1 mutations