Module 7 (cerebral Pathologies) Flashcards
Stiffness of neck + headache + hyper attenuation around circle of Willis on CT directs towards what condition?
Subarachnoid haemorrhage
Which is the most common site for hypertensive bleed?
Basal ganglia, putamen
Where do you see banana shape on CT?
subdural hematoma
Where do you see oval shape on CT
Epidural hematoma
Where do you see puff of smoke up appearance on brain, x-ray angiography?
Moya moya disease
Where do you see Mount Fuji sign on CT?
Tension pneumoceohalus. It is seen as air between the tips of frontal lobes.
Where do you see empty delta sign on CT?
On CT or dual Venous sinus thrombosis of the superior sagittal sinus. (The superior Sagittal side is a midline vein without valves and tunica)
Where do you see pancake brain sign on CT?
Alobar holoprocencephaly (inadequate formation of forebrain structures]
(Due to trisomy 13 petau syndrome)
Where do you see figure of 8 or snowman sign on brain MRI?
Lissencephaly (smooth brain, no gyri and sulci)
What is schizencephaly?
Unilateral or bilateral clefts within the cerebral hemisphere
What is porencephaly?
Cavities within the brain hemispheres due to encephalomalacia
What do you see in Dandy Walker malformation
On CT large posterior cystic area connecting to the 4th ventricle.
Clinically - macrocephaly, bulging fontanelles
(Head hit to the wall while walking and got two bulges)
What do you see in Arnold chiari malformation?
Herniation of cerebellar contents through the foramen magnum
What do you see in Joubert syndrome?
Molar tooth sign on MRI (remember as jaw bite teeth )
What do you see in Vein of Galen formation?
You can see enlarged midline venous structure with multiple arteriovenous communications on MRI angiography
