Stroke

Question 1

DDx bilateral thalamic infarcts

Answer 1

- Artery of Percheron infarct (involves bilateral ventromedial thalamic infarcts +/- midbrain infarct
OR
- Deep venous thrombosis
OR 
- Top of basilar syndrome

Question 2

Risk factors for cerebral venous thrombosis causing stroke in young pt

Answer 2

Pregnancy, OCP, infection, thrombophilia, malignancy

Question 3

Classic patterns of venous infarction

Answer 3

Superior sagittal thrombosis - infarction of high parasagittal convexity
Deep venous thrombosis - infarct of bilateral BG
Transverse sinus thrombosis - infarct of posterior temporal lobe

Question 4

Key differential in stroke in young patients

Answer 4

Embolic (right to left shunts, endocarditis, etc.)
Vasculitis (primary and secondary)
Dissection /vascular injury
FMD
Moya moya

Question 5

Internal cerebral vein infarct apperances

Answer 5

Bilateral BG and thalami signal abnormality