Case Images
Case Notes
History
21 yo male who present with persistent headaches after minor head injury.Exam
MR susceptibility (SWI)
Prior Study
T2-w spin-echo or noncontrast T1-w MR, noncontrast CT with scout skull image1. Evidence of chronic raised intracranial pressure related to advanced slowly progressive hydrocephalus caused by partial block of CSF egress from tectal dysplasia and from developmentally small posterior fossa compressing the 4th ventricular outlets.
2. Calvarial changes of chronic raised ICP on the scout for CT with split cranial sutures and remodeling and enlargement of the sella turcica.
3. Mulitcentric developmental dysmorphic changes including aqueductal stenosis , cortical migrational abnormalities, and hypoplasia of the clivus and posterior fossa.
Sagittal post contrast MR
1. Grade 3/4 chronic ventriculomegaly most consistent with chronic arrested hydrocephalus.
2. Brain formation anomalies are evident with cortical dysplasia, mesencephalic/quadrigeminal plate dysplasia causing aqueductal stenosis, and chronic cerebellar tonsillar ectopia.
3. Sellar remodeling related to chronic herniation of the ventral 3rd ventricle and suprasellar cistern into the expanded sella turcica.
MR flair
1. Grade 3/4 arrested hydrocephalus with evidence of chronic raised ICP, as above.
Post contrast T1-w MR
1. Unremarkable post contrast T1-w sequence, as above.
