with serious difficulties in interpreting the clinical picture. Conventional MRI is the main noninvasive tool for a diagnosis of brain abscess, revealing a ring-enhancing lesion with perifocal edema, although this also occurs in other necrotic masses (i.e., glioblastoma and metastasis;Haimes et al...
On a contrast-enhanced CT, cerebral metastases characteristically appear as round, well-circumscribed masses with peripheral enhancement. From 50% to 65% of cerebral metastases are solitary on CT. Gadolinium-enhanced MRI of the brain is much more sensitive than contrast-enhanced CT imaging in ...
Twitter Google Share on Facebook (redirected fromBrain tumors) Thesaurus Medical Encyclopedia Related to Brain tumors:glioblastoma,meningioma,Brain cancer ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1.brain tumor- a tumor in the brain ...
VBSSFP MRI complements conventional spin-echo imaging to help characterize epidermoid tumors and arachnoid cysts. The improved characterization of these cystic masses with VBSSFP MRI can help radiologists and surgeons establish more accurate preoperative diagnoses and more appropriate treatment plans....
[images N, O, and P] in the Supplement); 1 case of offset of the lateral masses of C1 and C2, suggestive of instability at the craniocervical junction (eFigure [image Q] in the Supplement); 1 sellar/suprasellar mass likely representing an adamantinomatous craniopharyngioma (eFigure [image...
The basal nuclei, or basal ganglia, are four masses of gray matter deep in the cerebrum: the caudate nucleus , putamen, globus pallidus, and amygdala. Functionally related nuclei of the midbrain, such as the substantia nigra, are sometimes considered to belong to the basal nuclei as well. ...
For patients with brain metastases at relapse after first-line chemotherapy, standard treatment involves salvage HDCT or standard-dose chemotherapy followed by consideration for resection of residual masses. If residual masses are not amenable to resection, then these patients should be evaluated for eit...
(the largest portion of the brain, located in the upper part of the skull cavity). Unfortunately, the majority of metastatic brain tumors spread diffusely within the brain and are found at least half the time at more than one site in the brain tissue, appearing as multiple masses on the ...
Focal subcorticalLarge masses; thin overlying cortex; small+distorted ipsilateral hemisphere Abnormal cortical organization PolymicrogyriaMultiple small+irregular sulci, enlarged overlying subarachnoid spaces, mild ventricular dilatation SchizencephalyGenetic and acquired causes. Parenchymal cleft between cerebral surfa...
A CXR can pick up lung cysts, but CT and MRI are better in depicting them. MRI is preferred because of its superior visualization of cyst content and for staging. Pulmonary CE appears as one or more homogenous round or oval masses with smooth borders surrounded by normal lung tissue; daught...