bombshelll/rocobrain · Datasets at Hugging Face

image imagewidth (px) 172 845	caption stringlengths 8 2.28k
	MRI of brain showing pituitary enlargment.
	Computed tomography scan of the brain (with contrast) showing ill-defined hypodensity lesion with multiple hypodensity spots at bilateral parieto-occipito-temporal regions. The lesion was more on the right than the left cerebral hemisphere.
	Magnetic resonance Imaging of brain axial cut showing a huge arachnoid cyst in the pineal region
	HRCT axial image of right temporal bone shows loss of bony septae (long arrow) resulting in coalescent mastoiditis
	Computed tomography of brain showing multiple intra- and extracranial enhancing lesions at left occipital, left parietal subdura (5.6 × 3.5 cm) with midline shift and vasogenic edema, and right cerebellum.
	Cerebellar atrophy in a chronic phenytoin user. Coronal T2-weighted MRI sequence showing marked atrophy of the cerebellum, disproportionate to that observed in the rest of the brain parenchyma, in an 18-year-old patient who had been treated with phenytoin since the age of 5 years.
	This is a perfusion scan using Tc-99 macroaggregated albumin of the head and upper chest showing uptake in the brain, thyroid gland, and bilateral supraclavicular regions (arrows).
	MRI brain with contrast, axial film showing well enhancing tumor in pineal region
	1 h DWI shows increased signal in basal ganglion (black arrow) but decreased signal in temporal lobe (white arrow).
	CECT scan showing destruction of right sphenoid, frontal bones and zygomatic arch with associated soft tissue component extending laterally into the infratemporal fossa and medially into the orbit.
	MRI of a 61-year-old patient with embolic silent brain infarction in cerebellum (arrow).Note: With kind permission from Springer Science +Business Media: Nervenarzt, Silent brain infarctions, Volume 82(8), 2011, pages 1043–1052, Ritter MA, Dittrich R, Ringelstein EB. © Springer-Verlag 2011.103Abbreviation: MRI, magnetic resonance imaging.
	Hippocampal activation during AAA extinction covarying with BMI and extinction errors. Higher left hippocampal activation in the MEM group (compared to PLAC) that covaried with BMI and extinction errors during AAA extinction learning (SPM analyses of MEM > PLAC thresholded at p < 0.05 FWE-corrected on cluster level, minimum cluster size k = 20, with BMI and extinction errors as covariates of interest and age and gender as nuisance variables). The bar graph represents the extracted eigenvariates of the hippocampus cluster separately for PLAC and MEM participants.
	Plain computed tomography scan of the brain showing tentorial hyperdensitis
	Magnetic resonance imaging of brain showing left cerebellopontine angle mass lesion (arrow) compressing the brainstem
	MRI flair sagittal image demonstrating infarction of the basal ganglia, floor of the frontal lobe above the hypothalamus, right superior cerebellum, and cerebellar vermis.
	Axial view of cortex of cerebellar hemispheres (orange), cerebellar white matter (yellow), cerebellar vermis (violet), pons (green) and fourth ventricle (pink). The two cerebellar hemispheres are separated by the vermis medially. Note the trigeminal nerves (white arrows) emerging from the brainstem on each side. Other labels: cerebral cortex (red), right cerebral white matter (bright green), left cerebral white matter (white).
	Contrast-enhanced axial T1-weighted image revealing a heterogeneous contrast-enhancing lesion in the subcortical white matter of the right parietal lobe and no apparent dural attachment.
	Cerebral MRI scan with pathologic infiltration due to vasculitic change in both temporal lobes.
	An MRI image showing the skull-based plasmacytoma growing through the skull and into actual brain tissue.
	Preoperative CT scan brain axial views
	Magnetic resonance imaging brain – T1 coronal (postgadolinium contrast) showing right parafalcine subdural empyema
	CT-angiography demonstrating the patency of the by-pass graft. CT-angiography after EC-IC bypass shows left craniotomy defect with pronounced distal MCA flow from the left superior temporal artery (arrow)
	CT brain – right occipital infarct
	Post operative contrast CT scan of brain
	FLAIR image showing right parietal atrophy with ex vacuo ventricular dilatation with left cerebellar atrophy
	Axial CT scan brain contrast study showing a well-defined 4 × 5 × 5 cm lesion in the left temporo – parietal region, uniformly enhancing on contrast administration with significant mass effect and midline shift (imaging done in 2005)
	CT without contrast, hypodensity noted in the posterior parietal-occipital regions bilaterally and a small hemorrhage in the left parietooccipital region.
	Magnetic resonance imaging of the brain showing frontal lobe contusions.
	Initial computed tomography scan shows hemorrhagic contusion in the right fronto-temporo-parietal region with severe brain swelling and epidural hematoma in the left temporo-occipital region.
	Axial MRI view of the patient’s brain, showing a large right frontal lesion that is compressing the lateral ventricles and inducing a midline shift to the left.
	T1-weighted MRI of the brain shows the left paracavernous dermoid cyst (white arrow).
	Follow-up brain CT shows a decrease of acute subdural hematoma (8 mm thickness) and improvement of midline shift (10 mm).
	The midsagittal section of the brain MRI with schematic illustration of landmarks and reference lines; FP, frontal pole; AC, commissura anterior; PC, commissura posterior; AGCC, the outermost point of corpus callosum genu; IGCC, innermost point of corpus callosum genu; TS, tuberculum sella, AGCC and IGCC points parallel to the AC-PC line and the point such a line crosses at the frontal lobe surface (FCS).
	Type II occipital condyle fracture: coronal reformatted CT image of the craniocervical junction performed as part of a CT traumogram in a young male pedestrian struck by a bus. The fracture of the left occipital condyle is associated with extension into the right basiocciput (black arrows). Note the associated soft tissue emphysema and pneumorachis within the anterior epidural space of the cervical spine (white arrows)
	Cerebral effects of observing the action videos, as compared with performing the 2-back memory task during the washout trials. SPMs of significant (P < 0.05, corrected for multiple comparisons) differential effects of observing action videos versus viewing scrambled images. There were effects, bilaterally, in occipital, parietal, and frontal areas.
	Computed tomography of brain
	Preoperative MRI on T2-weighted image showing high signal intensity admixed with irregular low signal areas in left temporal fossa.
	FDG PET scan PVS full stage. Indication: Brain metabolism 10 months after insult. L.D., female, 66 years: PVS full stage following intraoperative cardiac arrest September 2001. Despite immediate resuscitation severe cerebral hypoxemia, massive dehydratation and electrolyte imbalance; postoperative coma. Begin of early neurosurgical rehabilitation 2001/04/25.MRT of the brain (2001.05.07): Massive cortical and subcortical brain atrophy with dilated ventricles (normal intracranial pressure) following cardiac arrest and resuscitation.
	Magnetic resonance imaging brain showing left posterior frontal lobe open-lip schizencephaly
	Dynamic domain partitioning. Blue: brain region; red: random block regions; orange: regions after applying white matter mask.
	MRI of brain.
	Noncontrast CT scan showing temporal bone erosion (arrow) and right mastoid opacification.
	CT of the brain demonstrating a large supra- and intrasellar arachnoid cyst with mass effect on adjacent structures.
	There is an area of high attenuation involving the left temporal lobe anterosuperiorly corresponding with Wernicke's area.
	Whole-brain cytoarchitecture and vascular networks acquired by the MOST method. A 3D reconstruction of the mouse brain is in the top left corner; the selected 300 μm slab at the coronal plane presents the spatial location of the data at the center. The center shows the cytoarchitecture and vascular network, simultaneously acquired in the brain. Blue and yellow represents the branches of the longitudinal hippocampal vein and some thalamo-perforating arteries in thalamus, respectively, red represents all else vessels in this data set, and gray dots represent the center of somas. The enlarged views of the cytoarchitecture and vascular architecture of the white rectangle in cortical region in the data at the center are in the top right corner. Redrawn from the imaging dataset published in Wu et al. (2014).
	T2-weighted brain magnetic resonance image, showing an area of hyperintensity in the left precentral gyrus (arrow)
	FLAIR sequences of brain magnetic resonance imaging
	Contrast enhanced computerized tomogram (PET-CT) of the brain showing “starrysky” appearance
	T1 sagittal brain MRI view. Kinking and compression of medulla oblongata and somewhat herniation of the tonsil of the cerebellum are noted in cervicomedullary junction (black arrow). Also, fusion of the entire cervical spine is noted (white arrows).
	Brain MRI using DWI. A high‐intensity area was located at the splenium of the corpus callosum (arrow)
	CT- Volume Rendering Techniques scan of temporal bone - Mondini Malformation
	MRI Brain showing multiple demyelinating lesions (arrows)
	Coronal computerized tomography showing tumor with intracranial extension into the anterior part of the temporal fossa
	Transverse fluid-attenuated inversion recovery image at the level of the middle cranial fossa. An irregular hyperintensity (consistent with oedema) is seen surrounding the mass and extending into the right thalamus and corona radiata
	CNS T1-weighted contrast-enhanced MRI showing interpenduncular spaces compressing the hypophysis and hypothalamus and with an absent neurohypophyseal bright spot.
	Dominant parieto-occipital pattern
	Magnetic resonance imaging (T2 flair weighted sequences) shows symmetrical hyperintensities in temporoparietal region
	Topographic image of the computer tomogram showing the sub occipital craniectomy and the stent extending from third ventricular area to the level of second cervical spinal level (arrows showing lower end with multiple side holes)
	CT scan of the brain without intravenous contrast. Bilateral lucencies in the basal ganglia with no evidence of hemorrhage or small vessel disease.
	Magnetic resonance imaging of the brain showing bilateral T2/FLAIR white matter hyperintensities involving corticospinal tracts, middle and inferior cerebellar peduncles, and dentate nuclei of cerebellum
	Conjunction analysis (happiness, sadness, fear vs. baseline). TC = temporal cortex. x coordinate is in the MNI stereotactic space; cluster-level thresholded at p (FDR) < 0.05.
	Localization of the parietal white matter (PWM) voxel and example of spectroscopic spectrum.
	Magnetic resonance imaging of the brain showing ring enhancing lesion in the left parietal lobe, on initial presentation.
	Coronal T1-WI MRI demonstrating middle cranial fossa tumor extending to the infratemporal region.
	10/30/14 Presenting Head CT showing effaced suprasellar cistern and left temporal subdural hemorrhage.
	Axial CT slice of the brain in a patient with NPH. The Evans index can be measured by dividing the maximal width of the frontal horns [B-C] by the maximal width of the inner table of the cranium at the level of the frontal horns [A-D]; or by an equivalent measure, such as by dividing the diameter of the frontal horns [B-C] by the widest brain diameter [E-F].
	Brain MRI of case 3 indicating total infarction of right middle cerebral artery. MRI, magnetic resonance imaging.
	T2 weighted axial image at the level of head of caudate nucleus shows the peritumoral edema (small arrow) multinodular lesion in the temporooccipital lobe (large arrow).
	Brainstem activation (PAG) in the 10-20 Hz frequency band when the patient’s stimulator was turned off.
	Main real hard tissue, soft tissue and air shadows in a PTG: 1, condylar process; 2, coronoid processes; 3, ramus; 4, angle; 5, body; 6, parasymphysis area; 7, symphysis area; 8, foramen mentale; 9, submandibular fossa; 10, mandibular canal; 11, linea oblique externa; 12, foramen mandibulae; 13, cortical border of the mandible; 14, glenoid fossa; 15, articular surfaces of the temporal bone; 16, articular eminence; 17, zygomatic arch; 18, a, b, c anterior and posterior cortical boundaries and floor of the maxillary sinus; 19, pterygomaxillary fissure; 20, maxillary tuberosity; 21, hamulus; 22, orbital rim; 23, infraorbital canal; 24, body of zygoma; 25, temporozygomatic fissure; 26, anterior nasal spine; 27, floor of the nasal cavity; 28, inferior nasal concha; 29, foramen incisivum; 30, hard palate; 31, external auditory meatus; 32, body of the cervical vertebra; 33, hyoid bone; 34, soft palate; 35, nasopharyngeal air shadow; 36, ear lobe
	MRI of the brain with gadolinium: Axial T1W sequence showing a large left parietal extra-axial diffusely enhancing mass with edema and mass effect on the brain. There is also a large subcutaneous component of the same mass, although the skull seems intact. 67×67 mm (300×300 DPI).
	FLAIR image reveals multifocal and asymmetric progression of PML, with involvement of the left temporal-occipital lobes (white arrow) and of the subcortical region of the right temporal lobe (U-fibers) (black arrow). Previous biopsy area (thin white arrow).
	— MRI performed during episode of blindness: posterior lesions in both occipital poles with a hyperintense signal (green arrow) on FLAIR sequence.
	MRI brain with gadolinium, coronal view, showing welldefined tumor in lateral recess with part of the tumor free in 4th ventricle

MRI of brain showing pituitary enlargment.

Computed tomography scan of the brain (with contrast) showing ill-defined hypodensity lesion with multiple hypodensity spots at bilateral parieto-occipito-temporal regions. The lesion was more on the right than the left cerebral hemisphere.

Magnetic resonance Imaging of brain axial cut showing a huge arachnoid cyst in the pineal region

HRCT axial image of right temporal bone shows loss of bony septae (long arrow) resulting in coalescent mastoiditis

Computed tomography of brain showing multiple intra- and extracranial enhancing lesions at left occipital, left parietal subdura (5.6 × 3.5 cm) with midline shift and vasogenic edema, and right cerebellum.

Cerebellar atrophy in a chronic phenytoin user. Coronal T2-weighted MRI sequence showing marked atrophy of the cerebellum, disproportionate to that observed in the rest of the brain parenchyma, in an 18-year-old patient who had been treated with phenytoin since the age of 5 years.

This is a perfusion scan using Tc-99 macroaggregated albumin of the head and upper chest showing uptake in the brain, thyroid gland, and bilateral supraclavicular regions (arrows).

MRI brain with contrast, axial film showing well enhancing tumor in pineal region

1 h DWI shows increased signal in basal ganglion (black arrow) but decreased signal in temporal lobe (white arrow).

CECT scan showing destruction of right sphenoid, frontal bones and zygomatic arch with associated soft tissue component extending laterally into the infratemporal fossa and medially into the orbit.

MRI of a 61-year-old patient with embolic silent brain infarction in cerebellum (arrow).Note: With kind permission from Springer Science +Business Media: Nervenarzt, Silent brain infarctions, Volume 82(8), 2011, pages 1043–1052, Ritter MA, Dittrich R, Ringelstein EB. © Springer-Verlag 2011.103Abbreviation: MRI, magnetic resonance imaging.

Hippocampal activation during AAA extinction covarying with BMI and extinction errors. Higher left hippocampal activation in the MEM group (compared to PLAC) that covaried with BMI and extinction errors during AAA extinction learning (SPM analyses of MEM > PLAC thresholded at p < 0.05 FWE-corrected on cluster level, minimum cluster size k = 20, with BMI and extinction errors as covariates of interest and age and gender as nuisance variables). The bar graph represents the extracted eigenvariates of the hippocampus cluster separately for PLAC and MEM participants.

Plain computed tomography scan of the brain showing tentorial hyperdensitis

Magnetic resonance imaging of brain showing left cerebellopontine angle mass lesion (arrow) compressing the brainstem

MRI flair sagittal image demonstrating infarction of the basal ganglia, floor of the frontal lobe above the hypothalamus, right superior cerebellum, and cerebellar vermis.

Axial view of cortex of cerebellar hemispheres (orange), cerebellar white matter (yellow), cerebellar vermis (violet), pons (green) and fourth ventricle (pink). The two cerebellar hemispheres are separated by the vermis medially. Note the trigeminal nerves (white arrows) emerging from the brainstem on each side. Other labels: cerebral cortex (red), right cerebral white matter (bright green), left cerebral white matter (white).

Contrast-enhanced axial T1-weighted image revealing a heterogeneous contrast-enhancing lesion in the subcortical white matter of the right parietal lobe and no apparent dural attachment.

Cerebral MRI scan with pathologic infiltration due to vasculitic change in both temporal lobes.

An MRI image showing the skull-based plasmacytoma growing through the skull and into actual brain tissue.

Preoperative CT scan brain axial views

Magnetic resonance imaging brain – T1 coronal (postgadolinium contrast) showing right parafalcine subdural empyema

CT-angiography demonstrating the patency of the by-pass graft. CT-angiography after EC-IC bypass shows left craniotomy defect with pronounced distal MCA flow from the left superior temporal artery (arrow)

CT brain – right occipital infarct

Post operative contrast CT scan of brain

FLAIR image showing right parietal atrophy with ex vacuo ventricular dilatation with left cerebellar atrophy

Axial CT scan brain contrast study showing a well-defined 4 × 5 × 5 cm lesion in the left temporo – parietal region, uniformly enhancing on contrast administration with significant mass effect and midline shift (imaging done in 2005)

CT without contrast, hypodensity noted in the posterior parietal-occipital regions bilaterally and a small hemorrhage in the left parietooccipital region.

Magnetic resonance imaging of the brain showing frontal lobe contusions.

Initial computed tomography scan shows hemorrhagic contusion in the right fronto-temporo-parietal region with severe brain swelling and epidural hematoma in the left temporo-occipital region.

Axial MRI view of the patient’s brain, showing a large right frontal lesion that is compressing the lateral ventricles and inducing a midline shift to the left.

T1-weighted MRI of the brain shows the left paracavernous dermoid cyst (white arrow).

Follow-up brain CT shows a decrease of acute subdural hematoma (8 mm thickness) and improvement of midline shift (10 mm).

The midsagittal section of the brain MRI with schematic illustration of landmarks and reference lines; FP, frontal pole; AC, commissura anterior; PC, commissura posterior; AGCC, the outermost point of corpus callosum genu; IGCC, innermost point of corpus callosum genu; TS, tuberculum sella, AGCC and IGCC points parallel to the AC-PC line and the point such a line crosses at the frontal lobe surface (FCS).

Type II occipital condyle fracture: coronal reformatted CT image of the craniocervical junction performed as part of a CT traumogram in a young male pedestrian struck by a bus. The fracture of the left occipital condyle is associated with extension into the right basiocciput (black arrows). Note the associated soft tissue emphysema and pneumorachis within the anterior epidural space of the cervical spine (white arrows)

Cerebral effects of observing the action videos, as compared with performing the 2-back memory task during the washout trials. SPMs of significant (P < 0.05, corrected for multiple comparisons) differential effects of observing action videos versus viewing scrambled images. There were effects, bilaterally, in occipital, parietal, and frontal areas.

Computed tomography of brain

Preoperative MRI on T2-weighted image showing high signal intensity admixed with irregular low signal areas in left temporal fossa.

FDG PET scan PVS full stage. Indication: Brain metabolism 10 months after insult. L.D., female, 66 years: PVS full stage following intraoperative cardiac arrest September 2001. Despite immediate resuscitation severe cerebral hypoxemia, massive dehydratation and electrolyte imbalance; postoperative coma. Begin of early neurosurgical rehabilitation 2001/04/25.MRT of the brain (2001.05.07): Massive cortical and subcortical brain atrophy with dilated ventricles (normal intracranial pressure) following cardiac arrest and resuscitation.

Magnetic resonance imaging brain showing left posterior frontal lobe open-lip schizencephaly

Dynamic domain partitioning. Blue: brain region; red: random block regions; orange: regions after applying white matter mask.

MRI of brain.

Noncontrast CT scan showing temporal bone erosion (arrow) and right mastoid opacification.

CT of the brain demonstrating a large supra- and intrasellar arachnoid cyst with mass effect on adjacent structures.

There is an area of high attenuation involving the left temporal lobe anterosuperiorly corresponding with Wernicke's area.

Whole-brain cytoarchitecture and vascular networks acquired by the MOST method. A 3D reconstruction of the mouse brain is in the top left corner; the selected 300 μm slab at the coronal plane presents the spatial location of the data at the center. The center shows the cytoarchitecture and vascular network, simultaneously acquired in the brain. Blue and yellow represents the branches of the longitudinal hippocampal vein and some thalamo-perforating arteries in thalamus, respectively, red represents all else vessels in this data set, and gray dots represent the center of somas. The enlarged views of the cytoarchitecture and vascular architecture of the white rectangle in cortical region in the data at the center are in the top right corner. Redrawn from the imaging dataset published in Wu et al. (2014).

T2-weighted brain magnetic resonance image, showing an area of hyperintensity in the left precentral gyrus (arrow)

FLAIR sequences of brain magnetic resonance imaging

Contrast enhanced computerized tomogram (PET-CT) of the brain showing “starrysky” appearance

T1 sagittal brain MRI view. Kinking and compression of medulla oblongata and somewhat herniation of the tonsil of the cerebellum are noted in cervicomedullary junction (black arrow). Also, fusion of the entire cervical spine is noted (white arrows).

Brain MRI using DWI. A high‐intensity area was located at the splenium of the corpus callosum (arrow)

CT- Volume Rendering Techniques scan of temporal bone - Mondini Malformation

MRI Brain showing multiple demyelinating lesions (arrows)

Coronal computerized tomography showing tumor with intracranial extension into the anterior part of the temporal fossa

Transverse fluid-attenuated inversion recovery image at the level of the middle cranial fossa. An irregular hyperintensity (consistent with oedema) is seen surrounding the mass and extending into the right thalamus and corona radiata

CNS T1-weighted contrast-enhanced MRI showing interpenduncular spaces compressing the hypophysis and hypothalamus and with an absent neurohypophyseal bright spot.

Dominant parieto-occipital pattern

Magnetic resonance imaging (T2 flair weighted sequences) shows symmetrical hyperintensities in temporoparietal region

Topographic image of the computer tomogram showing the sub occipital craniectomy and the stent extending from third ventricular area to the level of second cervical spinal level (arrows showing lower end with multiple side holes)

CT scan of the brain without intravenous contrast. Bilateral lucencies in the basal ganglia with no evidence of hemorrhage or small vessel disease.

Magnetic resonance imaging of the brain showing bilateral T2/FLAIR white matter hyperintensities involving corticospinal tracts, middle and inferior cerebellar peduncles, and dentate nuclei of cerebellum

Conjunction analysis (happiness, sadness, fear vs. baseline). TC = temporal cortex. x coordinate is in the MNI stereotactic space; cluster-level thresholded at p (FDR) < 0.05.

Localization of the parietal white matter (PWM) voxel and example of spectroscopic spectrum.

Magnetic resonance imaging of the brain showing ring enhancing lesion in the left parietal lobe, on initial presentation.

Coronal T1-WI MRI demonstrating middle cranial fossa tumor extending to the infratemporal region.

10/30/14 Presenting Head CT showing effaced suprasellar cistern and left temporal subdural hemorrhage.

Axial CT slice of the brain in a patient with NPH. The Evans index can be measured by dividing the maximal width of the frontal horns [B-C] by the maximal width of the inner table of the cranium at the level of the frontal horns [A-D]; or by an equivalent measure, such as by dividing the diameter of the frontal horns [B-C] by the widest brain diameter [E-F].

Brain MRI of case 3 indicating total infarction of right middle cerebral artery. MRI, magnetic resonance imaging.

T2 weighted axial image at the level of head of caudate nucleus shows the peritumoral edema (small arrow) multinodular lesion in the temporooccipital lobe (large arrow).

Brainstem activation (PAG) in the 10-20 Hz frequency band when the patient’s stimulator was turned off.

Main real hard tissue, soft tissue and air shadows in a PTG: 1, condylar process; 2, coronoid processes; 3, ramus; 4, angle; 5, body; 6, parasymphysis area; 7, symphysis area; 8, foramen mentale; 9, submandibular fossa; 10, mandibular canal; 11, linea oblique externa; 12, foramen mandibulae; 13, cortical border of the mandible; 14, glenoid fossa; 15, articular surfaces of the temporal bone; 16, articular eminence; 17, zygomatic arch; 18, a, b, c anterior and posterior cortical boundaries and floor of the maxillary sinus; 19, pterygomaxillary fissure; 20, maxillary tuberosity; 21, hamulus; 22, orbital rim; 23, infraorbital canal; 24, body of zygoma; 25, temporozygomatic fissure; 26, anterior nasal spine; 27, floor of the nasal cavity; 28, inferior nasal concha; 29, foramen incisivum; 30, hard palate; 31, external auditory meatus; 32, body of the cervical vertebra; 33, hyoid bone; 34, soft palate; 35, nasopharyngeal air shadow; 36, ear lobe

MRI of the brain with gadolinium: Axial T1W sequence showing a large left parietal extra-axial diffusely enhancing mass with edema and mass effect on the brain. There is also a large subcutaneous component of the same mass, although the skull seems intact. 67×67 mm (300×300 DPI).

FLAIR image reveals multifocal and asymmetric progression of PML, with involvement of the left temporal-occipital lobes (white arrow) and of the subcortical region of the right temporal lobe (U-fibers) (black arrow). Previous biopsy area (thin white arrow).

— MRI performed during episode of blindness: posterior lesions in both occipital poles with a hyperintense signal (green arrow) on FLAIR sequence.

MRI brain with gadolinium, coronal view, showing welldefined tumor in lateral recess with part of the tumor free in 4th ventricle