Advanced MR imaging of extraventricular supratentorial cortical ependymoma (original) (raw)
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Huge supratentorial cortical ependymoma in a young child: case report and literature review
Neuroimmunology and Neuroinflammation, 2016
Supratentorial cortical ependymomas are uncommon in the pediatric population and extremely rare in very young children. Histologically, tumors of the anaplastic type are also less common in children. The authors report one case of anaplastic cortical ependymoma in a 16-month-old girl who presented with a 7-day history of left side weakness and rapid neurological deterioration. Brain imaging with computed tomography and magnetic resonance imaging scanning showed a huge right fronto-parietal cystic and solid lesion compressing the brain parenchyma. The young child was operated via a transparietal approach with gross total resection of the lesion. The tumor's histology was anaplastic ependymoma. Intensive chemotherapy was given post operatively and the patient remained well without recurrence after 20 months of follow-up.
Supratentorial extra ventricular intraparenchymal ependymoma in a child
Archives of Pediatric Neurosurgery
Background, Ependymal tumors are uncommon in intracranial tumors. Ependymal origin usually involves an intraventricular localization. Exceptional intraparenchymal extra ventricular locations have been described. We report a case of extra ventricular ependymoma managed in our department. Description du cas. Une fillette de 8 ans a été admise pour une hémiparésie gauche qui progressait depuis deux semaines associée à des maux de tête chroniques. L’examen neurologique a noté une force musculaire évaluée à 4/5 dans l’hémicorps gauche. L’imagerie médicale a permis de mettre en évidence une masse pariétale temporale droite volumineuse mixte, intraparenchymateuse, évoquant d’abord un astrocytome diffus (grade II de l’OMS). Après excision totale macroscopique, l’histologie et l’immunohistochimie ont conclu qu’il s’agissait d’un épendymome de grade II de l’OMS. Cinq mois après l’opération, le patient était asymptomatique et la tomodensitométrie de contrôle n’était pas remarquable. Après un s...
Asian Journal of Neurosurgery, 2018
We report a 69-year-old patient with left paresthesia and hemiparesis. Magnetic resonance imaging revealed a right frontoparietal cystic tumor. A subtotal surgical resection was performed, and an Ommaya reservoir was left in place. The pathological diagnosis was supratentorial extraventricular anaplastic ependymoma. Radiation therapy was administered, and Ommaya reservoir drainages were performed. Four months after, her clinical status deteriorated after a reservoir drainage and image revealed an acute hemorrhage. An additional resection was carried out, and chemotherapy was undergone. One month later the tumor relapsed and the patient died 18 months after initial diagnosis. Some poor prognostic factors have been suggested in the literature: Young age, incomplete tumor resection – eloquent area location, histological anaplasia, supratentorial, and extraventricular locations. Ommaya reservoirs may be used in cystic lesions as a temporary measure only. Surgery is the mainstay of thera...
Intracranial Ependymoma and Subependymoma : MR Manifestations 83
2013
In order to provide a detailed description of the MR appearance of intracranial ependymoma, the MR examinations of 12 patients (10 with ependymomas and two with subependymomas) were reviewed and correlated with operative and pathologic reports. Three of 10 ependymomas were intraventricular, two were intraparenchymal, and five were transependymal, extending from CSF spaces into parenchyma. Both subependymomas were intraventricular. Solid ependymomas and subependymomas were isoto hypointense relative to normal white matter on T1-weighted images and hyperintense on proton-densityand T2-weighted images. Foci of signal heterogeneity within solid neoplasms represented methemoglobin, hemosiderin, necrosis, calcification, and encased native vessels or tumor vascularity. Gd-DTPA-enhanced images in two patients differentiated enhancing tumor from surrounding nonenhancing edema and from surrounding normal brain parenchyma. Cystic neoplasms had sharply defined, round or oval margins and uniform...
Purely Cortical Anaplastic Ependymoma
Case Reports in Oncological Medicine, 2012
Ependymomas are glial tumors derived from ependymal cells lining the ventricles and the central canal of the spinal cord. It may occur outside the ventricular structures, representing the extraventicular form, or without any relationship of ventricular system, called ectopic ependymona. Less than fifteen cases of ectopic ependymomas were reported and less than five were anaplastic. We report a rare case of pure cortical ectopic anaplastic ependymoma.
Anaplastic supratentorial cortical ependymoma presenting as a butterfly lesion
Surgical Neurology International, 2012
Background: Anaplastic cortical ependymomas are rare lesions with few cases reported in the literature. Case Description: We present a unique case of an anaplastic cortical ependymoma in a 51-year-old female presenting as a butterfly lesion with involvement of both frontal lobes. The patient underwent gross total resection of her tumor with further adjuvant treatment. We present the findings in our case and review the literature surrounding supratentorial ependymomas and their treatment outcomes. Conclusion: Rarely, cortical ependymoma can present as a butterfly lesion and should be considered in the differential diagnosis of such lesions in adults.
Patterns of Brain Infiltration and Secondary Structure Formation in Supratentorial Ependymal Tumors
Journal of Neuropathology and Experimental Neurology, 2008
Ependymomas are generally considered to be non-infiltrative tumors that have discrete borders with adjacent brain tissue. Most occur in the posterior fossa or spinal cord. Supratentorial ependymal tumors arise near the ventricular system, or more rarely, within the cerebral white matter or cortex. Presented here are six supratentorial ependymal tumors, three that primarily involve the cerebral cortex and three that extend into the cortex from the underlying white matter. By microscopy, all of these tumors locally infiltrate the cortex and/or white matter along small blood vessels and axonal fiber tracts. They also form other glioma secondary structures including perineuronal tumor cell satellitosis and subpial tumor cell mounds. The three cortical ependymal tumors show a spectrum of features ranging from conventional and clear cell ependymoma-like patterns to more angiocentric glioma-like histology. Since ependymal tumors generally have a significantly better prognosis than other infiltrating gliomas, recognition of their capacity to infiltrate adjacent cortex and white matter is important to prevent the misdiagnosis of oligodendroglioma, astrocytoma, or infiltrating glioma, not otherwise specified. Cortical ependymomas and angiocentric gliomas may comprise a group of locally infiltrative ependymal tumors that are associated with an excellent prognosis following gross total surgical resection.