your task is to arrange a given list of radiological findings into a given template.

Findings:
62-year-old male, acute onset headache, hypertension history, compared to CT head 01-12-2021, right frontoparietal subdural hematoma, left parieto-occipital ischemic changes, mild hydrocephalus, bilateral mastoid air cell opacification.

Template:
CLINICAL DATA:

TECHNIQUE: Unenhanced brain CT scan.

COMPARISON:

FINDINGS:

Preserved grey-white matter differentiation.
No acute intracranial hemorrhage.
No space-occupying lesion, hydrocephalus or brain herniation.
The orbits, paranasal sinuses and osseous structures are unremarkable.

###


 CLINICAL DATA:
62-year-old male with a history of hypertension presenting with acute onset headache.

TECHNIQUE: Unenhanced brain CT scan.

COMPARISON: CT head from 01-12-2021.

FINDINGS:

Left parieto-occipital ischemic changes are observed, with the remainder of the grey-white matter differentiation preserved.

A right frontoparietal subdural hematoma is present. No other acute intracranial hemorrhage is identified.

Mild hydrocephalus is noted, but no other space-occupying lesion or brain herniation is observed.

The orbits are unremarkable. Bilateral mastoid air cell opacification is noted, while the remaining paranasal sinuses and osseous structures are unremarkable. END