Article Figures & Data
Figures
- Fig 1.
Axial T2-weighted images (5400/103 [TR/TE]). Multiple, confluent, hyperintense, cystlike lesions exist in the right thalamo-ponto-mesencephalic region, exerting mass effect and compressing the cerebral aqueduct and the upper half of the fourth ventricle. The arrow shows periventricular edema caused by the obstructive hydrocephalus.
- Fig 2.
Axial fluid-attenuated inversion recovery images (9002/126/2250[TR/TE/TI]). A subtle hyperintense signal partially surrounds the lesions, compatible with a gliotic reaction.
- Fig 3.
Coronal T1-weighted MR image (480/14 [TR/TE]). The lesions are isointense with CSF, a finding consistent with noncommunicting hydrocephalus.
- Fig 4.
A (20 × 20 × 20 mm) proton MR spectrum (2000/144 [TR/TE]) obtained at the level of the mesencephalic cystic formation. A slight increment of Cho with no lactate is shown. This pattern is different from that observed in parasitic or tumor cysts. The increment in Cho could be due to demyelination surrounding the lesions, explained by the mass effect exerted by the spaces adjacent to parenchyma.
- Fig 5.
Postoperative axial T2-weighted images (5400/103 [TR/TE]). Resolution of hydrocephalus is shown, with no change of the midbrain lesions.
