Glioblastoma, IDH-wildtype - Radiopaedia.org
WEBAug 21, 2024 — Glioblastomas, now defined as IDH-wildtype tumors, are essentially tumors of adults, usually occurring after the age of 40 years with a peak incidence between 65 and 75 years of age. There is a slight male preponderance with a 3:2 M:F ratio 5.
Cystic glioblastoma | Radiology Reference Article | Radiopaedia.org
WEBFeb 25, 2023 — Cystic glioblastoma is a descriptive term for one form of glioblastoma that contains a large cystic component, rather than being a pathological subtype. Please refer to the main article on glioblastoma for a broad discussion on this tumor.
Brain tumors | Radiology Reference Article - Radiopaedia.org
WEBAs a general rule, brain tumors increase in frequency with age, with individual exceptions (e.g. pilocytic astrocytoma, the vast majority of which are found in young patients), and a number of uncommon tumors found in infancy (see brain tumors of infancy ).
Multifocal glioblastoma | Radiology Reference Article
WEBJan 9, 2021 — Multifocal glioblastomas are tumors which have multiple discrete areas of contrast-enhancing tumor embedded with, or connected by, T2/FLAIR signal abnormality. Multifocal glioblastomas are considered to be part of the one tumor and are commonly encountered, accounting for 2-20% of all glioblastomas 3,4.
Cerebral abscess | Radiology Reference Article | Radiopaedia.org
WEBMay 20, 2024 — MRI is more sensitive than CT. Although peripherally-enhancing lesions may be non-specific by imaging, diffusion-weighted sequences (less commonly MR spectroscopy) showing central diffusion restriction are critical for suggesting the diagnosis of a cerebral abscess.
Lymphomas of the central nervous system - Radiopaedia.org
WEBJul 23, 2024 — On imaging, primary diffuse large B-cell lymphoma of the CNS typically appears as a CT hyperdense enhancing supratentorial mass, with MRI T1 hypointense, T2 iso- to hypointense, vivid homogeneous enhancement and restricted diffusion.
Hemangioblastoma (central nervous system) - Radiopaedia.org
WEBAug 10, 2024 — Hemangioblastomas are tumors of vascular origin and occur both sporadically and in patients with von Hippel Lindau disease. They are WHO grade 1 tumors, which can occur in the central nervous system or elsewhere in the body, including kidneys, liver, and pancreas. These tumors generally present on imaging as sharply demarcated homogeneous ...
Cerebral ring enhancing lesions - Radiopaedia.org
WEBNov 25, 2023 — The differential for peripheral or ring enhancing cerebral lesions includes: cerebral abscess. tuberculoma. neurocysticercosis. metastasis. glioblastoma. subacute infarct / hemorrhage / contusion. demyelination (incomplete ring) tumefactive demyelinating lesion (incomplete ring)
Gliomatosis cerebri | Radiology Reference Article | Radiopaedia.org
WEBJun 24, 2024 — MRI. Mass effect and enhancement are often minimal despite large portions of the brain being involved. There is a loss of grey-white matter differentiation and diffuse gyral thickening. Diffuse T1 and T2 prolongation throughout both white and grey matter: T1: iso to hypointense to grey matter 1.
Cerebral radiation necrosis - Radiopaedia.org
WEBJan 11, 2024 — Cerebral radiation necrosis or radionecrosis refers to necrotic degradation of brain tissue following intracranial or regional radiation either delivered for the treatment of intracranial pathology (e.g. astrocytoma, cerebral arteriovenous malformation) or as a result of irradiation of head and neck tumors (e.g. nasopharyngeal carcinoma).