title: MRI of primary meningeal tumours in children.
abstract: Childhood meningeal tumours are uncommon and mostly meningiomas. We reviewed the histological and radiological findings in meningeal tumours in six children aged 12 years or less (four benign meningiomas, one malignant meningioma and one haemangiopericytoma). Compared to the adult counterpart, childhood meningiomas showed atypical features: cysts, haemorrhage, aggressiveness and unusual location. MRI features varied according to the site of the tumour, histology, haemorrhage, and presence of intra- or peritumoral cysts. Diagnosis of the extra-axial tumour was relatively easy in two patients with meningiomas, one malignant meningioma and one haemangiopericytoma. MRI findings strongly suggested an intra-axial tumour in two patients with benign meningiomas, because of severe adjacent edema. Awareness of the variable findings of childhood meningiomas and similar tumours may help in differentiation from brain tumours.
authors.affiliation: Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. hkyoon@smc.samsung.co.kr
authors.forename: H K
authors.initials: HK
authors.lastname: Yoon
authors.forename: S S
authors.initials: SS
authors.lastname: Kim
authors.forename: I O
authors.initials: IO
authors.lastname: Kim
authors.forename: D G
authors.initials: DG
authors.lastname: Na
authors.forename: H S
authors.initials: HS
authors.lastname: Byun
authors.forename: H J
authors.initials: HJ
authors.lastname: Shin
authors.forename: B K
authors.initials: BK
authors.lastname: Han
mesh_terms: D001921:Brain / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006393:Hemangiopericytoma / Q000473:pathology; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology*; D008579:Meningioma / Q000473:pathology*; D014057:Tomography, X-Ray Computed