Données démographiques:
12 ans, Masculin
Indication:
Headache, lethargy
Constatations
- T1 hypointense, T2/FLAIR hyperintense, nonenhancing mass measuring 4.6 x 5.5 x 5.8 cm centered in the left thalamus with inferior extension into the left eccentric midbrain, lateral extension into the posterior limb of the left internal capsule, and superior extension into the left frontoparietal periventricular white matter
- Areas of internal restricted diffusion, particularly in the inferior and anterosuperior aspects of the mass
- Associated obstructive hydrocephalus at the level of the posterior third ventricle and cerebral aqueduct with subependymal edema and supratentorial sulcal effacement
- Dilated optic nerve sheaths and expanded Meckel's caves relating to elevated intracranial pressure
- Areas of restricted diffusion in the bilateral parahippocampal gyri which could represent ischemic infarcts, sequelae of recent seizure activity, or less likely additional areas of tumor involvement
Diagnostic
Diffuse midline glioma
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