Neuroradiology

‘Progressive Cavitating Leukoencephalopathy’

Multifocal patchy confluent, coalescent T2/FLAIR hyperintensities involving bilateral fronto-parietal subcortical white matter, centrum semiovale and...

Pantothenate kinase-associated neurodegeneration (PKAN).

The T2W images demonstrates focal low signal intensities involving bilateral globus pallidus with central area...

Progressive supranuclear palsy (PSP).

Moderate generalized cerebral , cerebellar atrophy with mild to moderate ventriculomegaly Focal midbrain atrophy with...

Left Broca’s area (ASPECTS score =8)

A focal acute infarct involving the left middle frontal gyrus extending up to the suprainsular...

T2-FLAIR MISMATCH SIGN – an imaging marked for IDH-mutant 1p/19q non-codeleted gliomas (diffuse astrocytomas).

[caption id="attachment_746" align="alignnone" width="608"] An approximately 3 x 5.8 x 3.3 cm ovoid poorly...

YIN-YANG SIGN – Solitary Fibrous tumour (SFT)

[caption id="attachment_696" align="alignnone" width="300"] A large left frontal paramedian multilobulated mixed intensity (two separate...

‘supratentorial ependymoma’ versus pleomorphic xanthoastrocytoma (WHO grade I to 2*). .

An approximately 6 x 7.6 x 5.2 cm large complex cystic mass lesion in right...

SPONTANEOUS INTRACRANIAL HYPOTENSION (SIH)

Thin spontaneous bilateral fronto-temporo-parietal convexity as well as bilateral tentorial subdural collections associated with marked...

Patchy , gyriform areas of restricted diffusions are noted involving cingulate gyrus, insular cortex ,...

SWIRL SIGN A PREDICTOR OF HEMATOMA EXPANSION

Swirl sign represents extravasation of the blood which is fresh and active (acute ). The...

CALLOSAL ANGLE 86 DEGREE

Age related volume loss with Fazekas grade II periventricular, subcortical white matter chronic small vessel...

Craniopharyngioma

Widened sella with evidence of bone remodeling. An approximately 2.8 x 2.2 x 2.7 cm...

Dural metastasis versus meningitis or granulomatous disease versus IgG4 related disease.

Diffuse pachy meningeal enhancement along the tentorium cerebelli, posterior fossan and the brainstem, proximal cervical...

Tumour infiltration versus secondary acute infarct

A large diffuse irregularly marginated hypodensity involving right capsuloganglionic region, thalamus, insular cortex adjoining medial...

Dysgerminoma versus Langerhans cell histiocytosis versus lymphocytic / inflammatory hypophysitis

Marked nodular enhancing thickening of the pituitary stalk/hypophysis, slightly to the left of midline ,...

Hemolytic Uremic Syndrome (HUS)

Multifocal patchy T2 / FLAIR hyperintensities with relative restricted diffusions involving bilateral anterior frontal, superior...

focal thalamic tumefactive demyelinating lesion

A focal T2 / FLAIR hyperintensity involving right thalamus demonstrating mixed signal intensity on T2...

Pericallosal artery territory infarcts

Multifocal acute infarcts involving body of corpus callosum , adjoining right parafalcine . pericallosal frontoparietal...

Dandy-Walker malformation

Enlarged posterior fossa with a large unilocular CSF intensity extra-axial cystic lesion in the posterior...

Convex inferior Wall at mid transverse sinus – early sign of spontaneous intracranial hypotension (SIH)

Marked distention of bilateral transverse sinuses with normal flow voids, demonstrating Convex inferior Wall at...

DIAGNOSISNG SPONTANEOUS INTRACRANIAL HYPOTENSION ON AXIAL CT SCAN BRAIN IMAGES

Thin bilateral fronto-temporo-parietal hypodense subdural hygromas measuring less than 0.3 cm in maximum thickness with...

ISOLATED VEIN OF LABBE THROMBOSIS (with normal venous sinuses) WITH LARGE VENOUS INFARCT

An extensive gyriform area of blooming involving the left posterior temporal lobe extending to adjoining...

Semantic dementia (semantic variant primary progressive aphasia)

Focal asymmetric temporal atrophy (left>right) with exvacuuo dilatation of left temporal horn – likely suggestive...

lissencephaly-pachygyria spectrum (type I)

Marked thickening and broadening of bilateral fronto-temporo-parietal, occipital gyri with gross simplification, poor formation of...

post partum hypernatremic encephalopathy with osmotic demyelination.

Multifocal symmetric FLAIR hyperintensities with restricted diffusion on DWI involving the splenium of corpus callosum,...

Acute hyperglycemic encephalopathy,

Diffuse cerebral edema with subtle gyriform T2 hypointensities involving bilateral occipital, posterior temporal lobes predominantly...

Infarct in left cerebral peduncle with focal stenosis of left PCA ambient segment (P2)

Small acute embolic infarct involving left cerebral peduncle (within perforating branch territory of left P1/...

Nonketotic hyperglycinemia (NKH)

Tiny almost symmetric T2 hyperintensities involving the dorsal part of midbrain and pons at the...

HYperacute MCA territory infract

The right MCA and tip of periclinoid ICA appears slightly hyperdense at M1 – may...

MELANOMA METASTASIS

Multifocal altered signal intensity heterogeneously enhancing mass lesions of varying sizes and signal intensities involving...

diffuse type of acute leukoencephalopathy with restricted diffusion (ALERD)

Multifocal patchy and areas of restricted diffusions involving bilateral frontal , parietooccipital subcortical white matter,...

Interhemispheric epidermoid with dystrophic calcification.

*Small acute embolic infarct in pons (to right of midline)* • An approximately 3.5 x...

Multinodular and vacuolating neuronal tumor (MVNT)

Evidence of abnormal subcortical T2/FLAIR hyperintense lesion involving the right frontal lobe at middle frontal...

D12 Chance fracture (seatbelt injury)

Acute post traumatic mild anterior wedge compression fracture involving the D10 vertebral body causing 10%...

Acute Dengue Encephalitis

Inferior medial pontine syndrome, also known as Foville syndrome

A small acute embolic infarct involving the pontomedullary junction at right anterolateral aspect – likely...

T2-FLAIR MISMATCH SIGN ,

An approximately 2.8 x 2.5 x 3.1 cm altered signal intensity mass lesion epicentered at...

Bilateral internal carotid artery stenosis/hypoplasia with compensatory ectasia/dilatation of bilateral vertebral arteries, basilar artery and resultant flow related large terminal basilar artery aneurysm.

An approximately 1.5 x 1.3 cm fusiform aneurysm arising from the tip of basilar artery...

ANTERIOR CHOROIDAL ARTERY TERRITORY INFARCT

Multifocal acute embolic infarcts involving right medial temporal lobe, hippocampus, posterior limb of internal capsule,...

unilateral thalamic venous infarct with dural av fistula

A focal T2/FLAIR hyperintensity involving the right thalamus ( hyperintense on T2, FLAIR and hypointense...

SPONTANEOUS INTRACRANIAL HYPOTENSION (SIH)

Status post excision of posterior third ventricle neoplasm . No evidence of discrete recurrent or...

HSV encephalitis

Gyriform restricted diffusion on DWI involving left insular cortex and medial temporal cortex (not well...

Right vertebral artery dissection with acute cerebellar infarcts

Extensive acute infarcts involving the right cerebellum, sparing the middle cerebellar peduncle demonstrating restricted diffusion...

Medial medullary syndrome.

Clinical presentation left side hemiplegia with weakness of the tongue predominantly on the right lateral...

Autoimmune versus HSV encephalitis

Clinical History :8-year male presenting with convulsions with history of altered sensorium since last 15...

FLAIR-variable unilateral enhancement of the leptomeninges (FUEL)

Clinical history: 25 year female with headache , seizures and fever since 1 month Focal...

Chronic dural venous sinus thrombosis with development of dural AV fistula with MRI demonstration of raised intracranial tension and papilledema

Findings suggestive of chronic dural venous sinus thrombosis predominantly involving superior sagittal sinus as described....

cerebral amaebiasis

Multiple large cystic lesions of varying sizes (varying intensities) demonstrating subtle incomplete rim enhancement involving...