Expansion of Thalamic Hemorrhage After Initial Presentation

Intracerebral hemorrhage (ICH) accounts for 20-35% of all strokes. Hypertension is the commonest underlying cause of ICH. The common sites for hypertensive ICH are putamen, thalamus, pons, cerebellum, subcortical and lobar hematomas. Basal ganglia (putamen) is the most common site for ICH accounting for about 50% of all cases. Thalamus holds the second position andContinue reading “Expansion of Thalamic Hemorrhage After Initial Presentation”

THE DENSE PCA SIGN-Posterior Cerebral Artery Visualised on CT Scan

Dense or hyperdense MCA (middle cerebral artery) sign is a well recognized sign of early ischemia and is associated with large infarctions in MCA territory. Dense PCA sign is not so well recognized, however, it can be seen in about 35% of all cases of PCA territory infarction. It is typically located in ambient cistern,Continue reading “THE DENSE PCA SIGN-Posterior Cerebral Artery Visualised on CT Scan”


Giant cisterna magna, also called as mega cisterna magna, is a normal variation, and therefore, it is not a disease. It is found in about 1% of all scans done postnatally. The cisterna magna is the space between the inferior margin of the vermis and the posterior rim of the foramen magnum. The normal cisterna magna measures between 3 mmContinue reading “GIANT CISTERNA MAGNA”

Extensive Calcification in Brain in Fahr’s Disease

36-year old man presented with neuropsychiatric disturbances and developmental delay since childhood. There was no positive family history. Investigations for calcium and phosphorus metabolic disorders were normal. He had no evidence of hypoparathyroidism or pseudohypoparathyroidism. CT brain showed extensive symmetrical calcifications involving bilateral basal ganglia, corona radiata and subcortical regions. A diagnosis of idiopathic nonfamilialContinue reading “Extensive Calcification in Brain in Fahr’s Disease”


Neurocysticercosis (NCC) is one of the commonest causes of symptomatic epilepsy in India and many other countries. It is caused by Taenia solium (tapeworm infection). On CT scan, signs of active (alive) worm include: 1. Perilesional edema (seen as hypodensity in plain and contrast images, 2. Enhancement of lesion (disc-like or ring like) on contrastContinue reading “CALCIFIED ACTIVE NEUROCYSTICERCOSIS”

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