Case Notes
History
73 yo female originally presenting with SAH of unknown cause Rx with ventriculostomy; now presenting with altered mental status one month later.Exam
MR susceptibility (SWI)
Prior Study
Noncontrast T1-w and T2-w spin-echo MR1. Persistent, likely subacute or chronic, external hydrocephalus grade 2/4 despite the right frontal ventricular shunt.
2. There is some evidence of persistently elevated intracranial pressure (optic hydrops), as above, but there is no incisural herniation
Sagittal post contrast MR
1. Evidence of significant ventriculomegaly and posterior fossa cisternal enlargment consistent with a supratentorial convexity block.
MR flair
1. Persistent, likely subacute or chronic, external hydrocephalus grade 2/4 despite the right frontal ventricular shunt.
2. There is some evidence of persistently elevated CSF pressure, as above, but there is no incisural herniation