MR flair reveals one or more focal or regional supratentorial, intraaxial or extraaxial lesions (tumor, bleed, abscess, asymmetric vent size, etc.) providing enough mass effect to produce subfalcine shift, and/or downward lateralized uncal or parahippocampal transtentorial herniation.   [Yes/No]

MR flair reveals one or more focal or regional infratentorial intraaxial, or extraaxial, lesions (dural-based tumor, bleed, empyema, etc.) providing enough mass effect to produce downward tonsillar herniation, and/or upward incisural herniation.   [Yes/No]

There is evidence of obstructive lateral ventriculomegaly (hydrocephalus) or bilateral intra or extraaxial lesions or global brain swelling providing enough mass effect to cause downward central transtentorial herniation.   [Yes/No]

There is evidence of sequestered 4th ventriculomegaly or bilateral intra or extraaxial posterior fossa lesions providing enough mass effect to cause upward, central, transtentorial herniation.   [Yes/No]

There is of transcranial brain herniation through diastatic fractures or craniotomy defects.   [Yes/No]

Downward uncal or parahippocampal herniation has compressed the ipsilateral cerebral peduncle producing motor paresis and 3rd CN dysfunction.   [Yes/No]

Downward uncal or parahippocampal herniation has compressed the ipsilateral PCA causing an ischemic event producing visual cortex injury.   [Yes/No]

Downward central transtentorial herniation has interrupted perforator blood supply to the tuber cinereum, mammillary bodies and hypothalamus producing hypothalamic dysfunction and Parkinson-like movement disorders.   [Yes/No]

Trans-sphenoidal herniation has obstructed the superior sylvian vein causing frontotemporal edema or venous ischemic event.   [Yes/No]

Trans-sphenoidal herniation has damaged the uncinate fasciculus (can produce personality changes).   [Yes/No]

Subfalcine herniation has buckled the ipsilateral ICA over the interclinoid ligament causing an ICA ischemic event.   [Yes/No]

Subfalcine herniation has buckled the ipsilateral ACA over the free margin of the falx causing an ACA ischemic event.   [Yes/No]

Subfalcine herniation has displaced the mesencephalon enough to cause compression of the opposite side mesencephalon against the opposite side free tentorial dural margin producing motor paresis and 3rd CN dysfunction.   [Yes/No]

Subfalcine herniation is enough to obstruct CSF flow at either the foramen of Monroe or at the 3rd ventricular level.   [Yes/No]

Upward herniation is sufficient to obstruct CSF flow by compressing the cerebral aqueduct.   [Yes/No]

Downward tonsillar herniation causes compression of the cervicomedullary cord potentially causing apnea or hydromyelia.   [Yes/No]

Concurrent downward incisural and tonsillar herniation in intracranial hypotension causes severe unrelenting headaches.   [Yes/No]

There is evidence of focal arterial compression (ACA beneath falx, PCA over tent, ICA for interclinoid ligament, PICA over foramen magnum.   [Yes/No]

There is a post compressive reperfusion hemorrhage in the mesencephalon (i.e." Duret hemorrhage"); this can occur after transtentorial herniation.   [Yes/No]

There is subfrontal contusion related midline shift over the crista galli.   [Yes/No]

No other concurrent significant abnormality is present.   [Yes/No]