Browsing by Author "Gupta, AK"

Now showing 1 - 20 of 92
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    Absence of the left common carotid artery with cervical origin of the right subclavian artery
    (AMERICAN JOURNAL OF NEURORADIOLOGY, 2006)
    We report the case of a 1(1)/(2)-year-old female child, who developed symptomatic hemorrhage from major aorto-pulmonary collaterals after surgery for Tetrology of Fallot. During the course of embolization of the aorto-pulmonary collaterals, we discovered the presence of direct origin of the left internal and external carotid arteries from the aortic arch. Further, there was cervical origin of right subclavian artery. We discuss the clinical significance and potential embryological mechanism in development of this anomaly.
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    Adult onset moyamoya disease: Institutional experience
    (NEUROLOGY INDIA, 2011) Chinchure, SD; Pendharkar, HS; Gupta, AK; Bodhey, N; Harsha, KJ
    Moyamoya disease is a progressive steno-occlusive disease of bilateral carotid forks with the formation of fine collateral vascular network and is an angiographic diagnosis. We analyzed case records of 11 patients with "adult-onset moyamoya disease." Six patients presented with intracranial hemorrhage (intracerebral and/or intraventricular) and 5 with focal ischemia. Angiography revealed bilateral Internal carotid artery involvement in 8 patients and unilateral involvement in 3. Posterior cerebral artery involvement was seen in 3 patients. Saccular aneurysm involving posterior circulation was seen in only 1 patient. Although rare, adult-onset moyamoya disease should be considered as one of the causes for intracerebral and intraventricular hemorrhage in adults.
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    Aneurysmal bone cyst of skull - A report of two cases
    (RIVISTA DI NEURORADIOLOGIA, 2005) Purkayastha, S; Gupta, AK; Kapilamoorthy, TR; Bodhey, NK; Thomas, B
    An aneurysmal bone cyst is a benign lesion usually involving the long bones, vertebrae including odontoid, hypoid and mandible. Skull is a rare site for aneurysmal bone cyst. Only 3% occur in the cranium and sites of involvement include temporal, occipital, orbital, frontal, parietal, ethmoids and sphenoid bones in order of frequency. We report two cases of aneurysmal bone cysts in occipital bone and maxilla. We discuss the radiological features, surgical findings and emphasize the role of endovascular management in these lesions.
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    Autofluorescence spectroscopy for the in vivo evaluation of oral submucous fibrosis
    (Photomed Laser Surg., 2009) Haris, PS; Balan, A; Jayasree, RS; Gupta, AK
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    Bilateral cerebral venous angioma associated with varices: A case report and review of the literature
    (AMERICAN JOURNAL OF NEURORADIOLOGY, 2005) Vattoth, S; Purkayastha, S; Er, J; Gupta, AK
    A varix occurring with a cerebral venous angioma is a rare combination of cerebral vascular malformations. The most common vascular anomaly associated with a venous angioma is a cavernous angioma. We report a case of bilateral supratentorial venous angioma with 2 varices involving the angioma situated on the right frontotemporal region. Multiple subependymal veins were seen in the right supratentorial region, which joined to form multiple collector veins, which, in turn, unified into a tortuous channel in the region of the sylvian fissure and continued into venous varices.
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    Blindness, ophthalmoplegia and extensive radiculopathy: An unusual clinical syndrome in intracranial sino-venous thrombosis
    (NEUROLOGY INDIA, 2004)
    Isolated intracranial hypertension is a common manifestation of intracranial sino-venous thrombosis (ISVT). Markedly elevated intracranial tension presents with unusual features including cranial neuropathies and radiculopathy. We report two cases with ISVT, which presented with headache, papilledema, progressive visual loss, complete ophthalmoplegia and flaccid areflexic quadriparesis along with a normal sensorium. Magnetic resonance imaging (MRI) of the brain and cervical spinal cord showed no lesions that could account for the neurological deficits. Markedly elevated lumbar CSF pressure was noted in both cases. Nerve conduction study favored radiculopathy in one case and was normal in the other. Raised intracranial pressure was found to be the sole cause for the clinical manifestations. Visual impairment persisted in one patient despite lumbo-peritoneal shunting while the other died of septicemia. To our knowledge there are no previous reports of a syndrome comprising blindness, ophthalmoplegia and flaccid quadriplegia due to intracranial hypertension in ISVT.
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    Carotid artery stenting - An Indian experience
    (RIVISTA DI NEURORADIOLOGIA, 2003)
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    Carotid artery stenting: Results and long-term follow-up
    (NEUROLOGY INDIA, 2006)
    Background and Purpose: The role of carotid artery stenting (CAS) as an alternative to carotid endarterectomy in the treatment of for symptomatic carotid artery stenosis is investigated. Materials and Methods: Forty-seven patients underwent CAS over 10-year period. Forty-nine vessels were treated. Stenosis quantification was done using North American symptomatic carotid endarterectomy trial method. The mean follow-up period by clinical and Duplex examination ranged is 5.6 years. Results: The technical success rate was 100%. There were four deaths (8.1%) and two (4.1%) minor strokes within thirty days of procedure. There was no major strokes. All patients with minor stroke achieved complete recovery at 1-month follow up. Two deaths occurred probably due to hyperperfusion syndrome (HS) and two due to cardiac arrest. Conclusion: CAS is an effective treatment modality of symptomatic carotid artery disease but should be carefully done in high-risk groups having severe medical ailments and those having severe bilateral stenosis of the carotid arteries.
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    Case 186: Dysembrioplastic Neuroepithelial Tumor
    (RADIOLOGY, 2012) Raz, E; Kapilamoorthy, TR; Gupta, AK; Fiorelli, M
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    Cerebral arteriovenous malformation embolized through persistent primitive hypoglossal artery - A case report
    (INTERVENTIONAL NEURORADIOLOGY, 2005)
    Carotid-vertebral anastomoses are commonly detected as incidental findings. But sometimes these channels are important for the clinical condition of the patient. Here a case of right thalamo-capsular arteriovenous malformation is described where a persistent primitive hypoglossal artery was the only route for embolization of the arteriovenous malformation.
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    Cerebral arteriovenous malformation embolized through persistent primitive hypoglossal artery - A case report (vol 11, pg 241, 2005)
    (INTERVENTIONAL NEURORADIOLOGY, 2005)
    Carotid-vertebral anastomoses are commonly detected as incidental findings. But sometimes these channels are important for the clinical condition of the patient. Here a case of right thalamo-capsular arteriovenous malformation is described where a persistent primitive hypoglossal artery was the only route for embolization of the arteriovenous malformation.
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    Cerebral dural arteriovenous fistulae - An Indian experience
    (RIVISTA DI NEURORADIOLOGIA, 2003) Gupta, AK; Joseph, S; Kapilamoorthy, TR; Bejoy, T; Kesavadas, C
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    Cerebral myxomatous angiopathy. Imaging features
    (RIVISTA DI NEURORADIOLOGIA, 2004) Sonwalkar, HA; Gupta, AK; Varma, DR; Purkayastha, S; Bodhey, N; Kesavadas, C
    Strokes due to embolization from a cardiac myxoma are rare. Myxomatous cerebral emboli can cause occlusion of intracranial vessels or oncotic aneurysm formation. We describe a case of cardiac myxoma presenting with stroke having bilateral cerebral infarct and oncotic aneurysm formation. Myxomatous emboli have characteristic CT, MR and angiography findings, which are well seen in this case. The pathogenesis, imaging features, clinical presentation and natural history are discussed.
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    Changing characteristics of a colloid cyst of the third ventricle
    (NEURORADIOLOGY, 1999)
    We describe extremely unusual radiological characteristics in a colloid cyst of the third ventricle, where the cyst became dense and its size decreased following a cerebrospinal fluid diversion procedure. Such a course of events has been reported in colloid cysts only twice in the literature.
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    Chordoid meningioma mimicking tuberculoma
    (RIVISTA DI NEURORADIOLOGIA, 2005) Purkayastha, S; Gupta, AK; Varma, DR; Radhakrishnan, V
    Meningiomas are common extra-axial brain tumors presenting a bewildering variety of histopathological patterns. The rare subtypes seldom demonstrate the imaging features classically described for meningiomas. Here we present the imaging features of rare histological varieties of meningiomas.
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    Chordoid meningioma: A report of two cases
    (NEUROLOGY INDIA, 2003)
    Chordoid meningioma is an uncommon histopathological variant of meningioma. We report 2 cases of chordoid meningioma occurring in adult patients.
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    Coil embolization for intracranial aneurysms - An Indian experience
    (RIVISTA DI NEURORADIOLOGIA, 2003) Gupta, AK; Joseph, S; Bhattacharya, RN; Kapilamoorhty, TR; Kesavadas, C; Thomas, B
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    Coil Migration Through Skin After Posterior Tibial Artery Pseudoaneurysm Trapping
    (CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY, 2011) Chatterjee, S; Bodhey, NK; Gupta, AK; Bele, K
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    CT angiographic demonstration of agenesis of the internal carotid artery with transsellar cavernous collateral and PCA aneurysm
    (RIVISTA DI NEURORADIOLOGIA, 2004) Bodhey, NK; Gupta, AK; Varma, DR; Sonwalkar, HA; Purkayastha, S
    We report an unusual case of complete agenesis of the right internal carotid artery (ICA) with transsellar anastomosis from the cavernous segment of the contralateral ICA and presence of a posterior cerebral artery aneurysm and aberrant origin of the right subclavian artery.
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    CT cisternography of paradoxical cerebrospinal fluid rhinorrhea after operation for acoustic neuroma
    (RIVISTA DI NEURORADIOLOGIA, 2005) Thomas, B; Purkayastha, S; Vattoth, S; Gupta, AK
    Cerebrospinal fluid (CSF) rhinorrhea after acoustic neuroma surgery is a well-known complication. CT cisternography can be used to demonstrate the entry of CSF from cerebellopontine angle cistern into the mastoid air cells, middle ear and then into nasopharynx via Eustachian tube. We report a case of paradoxical CSF rhinorrhea after surgery for acoustic neuroma in which the path of CSF leak was accurately demonstrated using CT cisternography.