The document contains CT head scan results for multiple patients. The diagnoses include a small left basal ganglia bleed with minimal mass effect likely caused by hypertension, a right subdural bleed with extensive midline shift, a left peripheral subarachnoid hemorrhage likely caused by trauma with no mass effect, and a central subarachnoid hemorrhage likely due to aneurysm rupture with hydrocephalus. Other diagnoses include infarcts, edema, and lesions of various types in different areas of the brain.

1. CT HEAD CASES 1

2. Diagnosis: Small left basal ganglia bleed. Minimal mass effect. Likely hypertensive.
Posterior spinal line

3. Diagnosis: Right subdural. Extensive midline shift.
Posterior spinal line

4. Posterior spinal line
Diagnosis: Left peripheral subarachnoid haemorrhage. No mass effect. Likely traumatic.

5. Posterior spinal line
Diagnosis: Central subarachnoid haemorrhage. Likely aneurysm rupture. Hydrocephalus.

6. Posterior spinal line
Diagnosis: Right extradural haemorrhage. Midline shift. Right occipital infarct.

7. Posterior spinal line
Diagnosis: Right MCA territory infarct. Subacute (days to weeks). Minimal mass effect.

8. Posterior spinal line
Diagnosis: Left MCA territory acute infarct (hours). No mass effect.

9. Posterior spinal line
Diagnosis: Left PCA territory subacute infarct (hours to days). Mild mass effect.

10. Posterior spinal line
Diagnosis: Left MCA territory subacute infarct. Midline shift and craniectomy.

11. Posterior spinal line
Diagnosis: Left frontal lobe vasogenic oedema. Midline shift.

12. Posterior spinal line
Diagnosis: Right fronto-parietal vasogenic oedema. Midline shift.

13. Posterior spinal line
Diagnosis: Right frontal vasogenic oedema. Ring enhancing lesion (tumour vs abscess).

14. Posterior spinal line
Diagnosis: Left frontal vasogenic oedema. Ring enhancing lesion (tumour vs abscess).

15. Posterior spinal line
Diagnosis: Bifrontal vasogenic oedema. Solid enhancing lesion (tumour vs infection).

16. Posterior spinal line
Diagnosis: Bifrontal vasogenic oedema. Solid enhancing lesions (tumour vs abscess).