Tanycytic ependymoma is the rarest variant of ependymoma and occurs primarily in the spinal cord. Based on the histological characteristics of the tumor cells, ependymomas can be classified into further subtypes. Only two other cases of subcortical tanycytic ependymoma have been reported. The brain and spine are part of the central nervous system cns. Ependymoma introduction any tumor that arises from the glial cells in the brain is called a glioma.
Seventeen of them in the spinal cord almost always intramedullary, only three cases were extramedullary. Introduction the tanycytic ependymoma is an extremely rare, primitive neuroectodermal tumor, arising from the ependymoglial cells or tanycytes. Tanycytic ependymoma is an unusual morphological variant of who grade ii ependymoma, typically arising from the cervical or thoracic spinal cord. Anaplastic ependymoma hitskk87 and hitskk92 19871992, 19921997 hitskk87. Cerebrospinal fluid cytology in patients with ependymoma. Ependymomas arise from ependymal cells that line the ventricles of the brain and the center of the spinal cord. Childhood ependymoma treatment pdqhealth professional. Tanycytic ependymoma is an uncommon fibrillary variant of ependymoma, which was first described in 1978 by friede and pollack. Ependymoma brain tumors can arise in the brain intracranial or the spinal cord. Tanycytic ependymoma the rarest form of grade ii ependymoma. Tanycytic ependymomas are histological variants of ependymomas, usually found in the spinal cord 1. Tanycytic ependymoma is a rare fibrillary variant of ependymoma with preferentially located along the length of spinal cord. Radiation oncologycns wikibooks, open books for an open.
Tanycytic ependymoma is an uncommon variant which preferentially arises at this location compared with other regions of the neuraxis. It is known that multiple nervous system tumors can occur in neurofibromatosis type 2 nf2, which is caused by mutation in the nf2 gene, and that occurrence of ependymoma, including the tanycytic variant, can be associated with this genetic condition. Mar 01, 2014 ependymoma arise from the ependymal cells of the cerebral ventricles, corticle rests and central canal of the spinal cord, and manifest with variable symptoms such headache, vomiting, seizures, focal neurological signs and loss of vision and can cause obstructive hydrocephalus in some cases. Tanycytic ependymomathe rarest form of grade ii ependymoma. We present an unusual supratentorial subcortical tanycytic ependymoma in a 17year old male presenting with seizures. Our patient had a cpa mass that was a variant of ependymoma known as tanycytic ependymoma that mimicked vestibular schwannoma. Review article ependymoma diagnosis and treatment progress xiwei zhang 1, xueyong wu, xiaofang sheng2, yang wang2, hongyuan gao1, li xu, yueming zhu 1department of oncology, jingan district center hospital of shanghai huashan hospital affiliated to fudan.
This is primarily a tumor of the spinal cord, but occasional cases may arise from the third ventricle or the hypothalamus. Of the 8 patients with positive andor suspicious diagnoses, 5 ependymomas exhibited anaplastic features and 1 tumor was a myxopapillary ependymoma. Classic who grade ii ependymomas, including the tanycytic variant, generally present as centrally situated intramedullary tumors within the. Ependymoma begins in the ependymal cells in the brain and spinal cord that line the passageways where the fluid cerebrospinal fluid that nourishes your brain flows.
Rarely, ependymomas can occur in the pelvic cavity syringomyelia can be caused by an ependymoma. The common location of intracranial ependymomas is the fourth ventricle. Developed by renowned radiologists in each specialty, statdx provides comprehensive decision support you can rely on supratentorial ependymoma. Kasper em1, ippen fm2, maragkos ga2, anderson mp3, rojas r4, mahadevan a5.
True ependymal rosettes are absent, and perivascular rosettes are inconspicuous. This being the case, ependymoma of the neurohypophysis may be pituicytederived and a variant of pituicytoma. Papillary, clear cell, and tanycytic ependymoma are morphological variants without clinical significance beyond that of classical morphological who. I am writing about my mother 58 yr who recently got a complete surgical removal of tanycytic ependymoma. In these lesions, the classic ependymal rosettes and perivascular pseudorosettes are replaced by more fibrillar cells. Among classic ependymomas, the who defines rare histological variants, i. This is a rare form of ependymoma, arising from tanycytic cells.
Tanycytic ependymoma is a rare variant of ependymoma usually arising in the intra medullary spine. A place to tell your story so others can read and find hope. Tanycytic ependymomas usually carry better prognosis as compared to other variant of ependymomas and astrocytomas. Subependymomas are uncommon lesions that share the benign features of myxopapillary ependymomas. Magnetic resonance imaging showed intramedullary cystic lesion, in. The positive samples were usually hypercellular, with cohesive epithelioid cells. Ependymoma can occur at any age, but most often occurs in young children. The objective of our case report is to document the radiological and typical ependymal features of the neoplasm and to increase awareness in oncology community. Diagnostic imaging demonstrated a right subcortical pa rietooccipital heterogeous expansive lesion, with growth. Review questions to help you study for the neurology boards or rite exam. Usually, in pediatric cases the location is intracranial, while in adults it is spinal.
Tanycytic ependymoma recovery question spinal cord tumor. In addition to the classic and anaplastic types, myxopapillary and tanycytic variants of ependymoma have also been described in the spinal cord. A papillary ependymoma is a rare form of ependymoma, usually classified as a grade 2 tumour but can also be a grade 3. Ependymoma basics 1 ependymoma is a rare tumor of the brain or spinal cord. Know the causes, symptoms, treatment, prognosis of ependymoma. Research has recently shown there is also a type of ependymoma that has a gene change. Supratentorial tanycytic ependymoma in an adult male. Furthermore, there are even rarer variants of ependymomas that can include cellular, papillary, clear cell, and tanycytic subtypes. Review article ependymoma diagnosis and treatment progress.
Clear cell ependymomadisplays an oligodendrogliallike appearance with perinuclear halos. Tanycytic ependymoma is a rare variant of ependymoma and treatment guidelines are not established. A subependymoma is a type of ependymoma that has a distinctive appearance under a microscope histologic variant, and can be found within the supratentorial region st or posterior fossa pf regions of the brain. Anaplastic ependymoma genetic and rare diseases information. We report a rare case of the tanycytic variant of intramedullary ependymoma. In these lesions, the classic ependymal rosettes and perivascular. They do not arise from tanycytes which are located primarily in the floor of the third ventricle. An ependymoma is anaplastic if the cells grow very quickly and are significantly unusual in shape.
Misinterpretation as schwannoma or astrocytoma is a diagnostic problem and welldocumented cases are scarce. This uncommon ependymoma variant is composed of elongated, spindleshaped cells with thin eosinophilic fibrillary processes see the following image. Mar 07, 2018 anaplastic ependymoma is a type of ependymoma, which is a tumor that forms when cells in the central nervous system including the brain and spinal cord begin to multiply rapidly. Our patient had a cpa mass that was a variant of ependymoma known as tanycytic ependymoma that mimicked vestibular schwannoma radiologically and during intraoperative pathologic examination. Ependymoma brain and spinal cord tumours cancer research uk. Rarely, ependymomas can occur in the pelvic cavity. Ependymoma is a primary tumor, which means that it starts in either the brain or spine.
Because of this derivation, tanycytic ependymomas were presumed to typically be found in the spinal cord where the raphe are abundant in ependymoglia and tanycytes. The world health organization classifies the tanycytic ependymoma as a grade ii tumor. The ependyma is the epithelial lining of the brain ventricles and the central canal of. Fibrillar variant of ependymoma discrete margin with surrounding tissue features of ependymoma and astrocytoma elongated spindle cells with round oval nuclei with distinctly light and dark regions of chromatin similar to ependymoma and marked fibrillarity similar to astrocytoma.
This variant is preferentially located in the supratentorial compartment of the brain. Here, we present a rare case of cerebellar ependymoma with overlapping features of clearcell and tanycytic variants. An ependymoma is a tumor that arises from the ependyma, a tissue of the central nervous system. Radiation oncologycnsependymoma wikibooks, open books. However, reports of spinal tanycytic ependymoma associated with nf2 are extraordinarily rare. Historically, ependymoma was believed to disseminate throughout the neuraxis, and csi became the standard management approach however, more recent retrospective studies have shown that failure is primarily local in 90%. However, treatment for children is different than treatment for adults.
Tanycytes are the common progenitor cells of both ependymal cells and astrocytes. Ependymoma grade ii is the most common of the ependymal tumors and typically arises within or near the ventricular system. Tanycytic ependymoma is a rare form of ependymoma that usually arises in the intramedullary spine. Ependymoma is the most common spinal tumor in patients with nf2. Their name reflects the morphological similarlity of these tumor cells to the tanycytes.
Ependymoma genetic and rare diseases information center. As in the 2000 scheme, there are four categories of ependymal tumors. Amongst the 9 ventricular cases, only one tumor arose from the third ventricle. Ependymoma is a type of tumor that can form in the brain or spinal cord. Dec 30, 2016 tanycytic ependymoma has been recently classified as a variant of ependymoma by the who. Although the literature deals extensively with pathological features of this tumour entity, imaging features have not been well characterised. In summary, ependymal tumors of the sella are rare, poorly understood, and generally benign tumors. Two cases of spinal tanycytic ependymoma associated with. Childhood ependymoma is a disease in which malignant cancer cells form in the tissues of the brain and spinal cord. Tanycytic ependymoma is a rare fibrillary variant of ependymoma with a predilection for the spinal cord.
Papillary ependymomaforms linear, epitheliallike surfaces along cerebrospinal fluid exposures. They do not arise from tanycytes which are located primar. From wikibooks, open books for an open world tanycytic 939. Rela fusionpositive a new entity in 2016 update who grade iii. A 42yearold man has undergone complete resection of a supratentorial tanycytic ependymoma, with no evidence of residual disease. Radiotherapy for a supratentorial tanycytic ependymoma. There are only a handful of cases of the same reported in. What is ependymomatypescausessymptomstreatmentprognosis.
Molecular characterization of histopathological ependymoma. Ependymomas are also put into groups according to how quickly they are likely to grow. The tanycyticvariant of ependymomas was first characterized in detail by friede and pollak as having an appearance more similar to a common ancestor of both ependymal cells and astrocytes known as ependymoglia or tanycytes. We present an unusual supratentorial subcortical tanycytic ependymoma in a 17year old male. Key histological features are perivascular pseudorosettes and ependymal rosettes. The tumor was adjacent to the left lateral ventricle. A resource for neurologists, neurology residents, medical students on a neurology rotation, and people interested in neurology or neuroscience. Disease bioinformatics research of ependymoma has been linked to neoplasms, brain neoplasms, astrocytoma, glioma, medulloblastoma. Surgery and treatment options are identical to ependymoma treatment regimens. Ependymoma is a comparatively rare type of tumor of the central nervous system cns including, the brain and the spinal cord.
Case report senile tanycytic ependymoma of the spinal cord. Here, we present a rare case of cerebellar ependymoma with overlapping features of clearcell and tanycytic variants in an adult female, which mimicked hemangioblastoma hb on histology, thus necessitating immunohistochemistry ihc testing for definitive diagnosis. A page dedicated to my daughter to show her there are long term. The origin of ependymoma is a matter of debate but overall scientists believe it arises from cell called radial glia. Shukla s, malhotra kp, awasthi np, husain n, singh sk. An ependymoma is a tumor that arises from the ependyma, a tissue of the central nervous. In parallel, global dna methylation patterns distinguish nine molecular groups, some of which tightly overlap with histopathological subgroups. Cerebral and spinal cord tanycytic ependymomas in a young. The subependymoma, a variant of the ependymoma, is apt to arise in the fourth ventricle but. Brain tumors can occur in both children and adults.
Tanycytic ependymoma posses an astrocytomalook, with solid proliferation of spindle cells with elongated processes and with at. Ependymoma brain tumors arise from a special type of cell in the central nervous system cns known as the ependymal cells. Tanycytic ependymoma of the brain stem, presentations of. The study of ependymoma has been mentioned in research publications which can be found using our bioinformatics tool below. These particular elongate unipolar and bipolar ependymal cells extend from the ventricular lumen to the surface of the nervous system. Cerebellar ependymoma with overlapping features of clearcell and tanycytic variants mimicking hemangioblastoma. Ependymomas were first discovered by bailey in the year 1924. Radiation oncologycnsependymoma wikibooks, open books for. Feb 02, 2018 myxopapillary ependymomas are considered a biologically and morphologically distinct variant of ependymoma, occurring almost exclusively in the region of the cauda equina and behaving in a more benign fashion than grade ii ependymoma. This report documents a 41yearold woman underwent surgical treatment.
Papillary ependymoma forms linear, epitheliallike surfaces along cerebrospinal fluid exposures. Tanycytic ependymoma is a world health organization who grade ii tumor with histological characteristics distinct from the typical features of commonly encountered ependymomas. Ependymomas ependymoma, nos not otherwise specified, epithelial ependymoma, cellular ependymoma, clear cell ependymoma, tanycytic ependymoma, anaplastic ependymoma, ependymoblastoma and ependymoma variants myxopapillary ependymoma are rare, and represent 1. Giant cellrich tanycytic ependymoma as intramedullary. Cerebellar ependymoma with overlapping features of clear. Only 9 ventricular and 5 subcortical tanycytic ependymoma have been reported in the literature. Twentyfive cases have been reported including the authors case.
Ependymoma arise from the ependymal cells of the cerebral ventricles, corticle rests and central canal of the spinal cord, and manifest with variable symptoms such headache, vomiting, seizures, focal neurological signs and loss of vision and can cause obstructive hydrocephalus in some cases. Lowrisk complete resection, m0 and age mar 20, 2017 here, we present a rare case of cerebellar ependymoma with overlapping features of clearcell and tanycytic variants in an adult female, which mimicked hemangioblastoma hb on histology, thus necessitating immunohistochemistry ihc testing for definitive diagnosis. It has a unique histology emphasized by the inconspicuous ependymal pattern of cells and close resemblance to schwannoma and astrocytoma. Tanycytic ependymoma is an uncommon fibrillar variant of ependymoma characterized by streams of piloid, or hairlike, cells having ependymal nuclei. Jan 05, 2018 tanycytic ependymoma has a predilection for the spinal cord. A unique variant of ependymoma, myxopapillary ependymoma, occurs in the distal spinal cord filum terminale and has. Using the search terms tanycytic ependymoma and spine, we identified 27 reports of 34 patients with histologically proven diagnoses of tanycytic ependymoma. Less than 30 have been reported to date, most as small case reports. It can occur in both adults and children at any age, but in adults the frequency of this disease is more visible than in children. The authors report a 50yearold man with a cervical tanycytic ependymoma that was initially thought to be a schwannoma. Diagnosis as a world health organization who grade ii tanycytic ependymoma was supported by its appearance on evaluation of the permanent. This report documents a 41yearold woman underwent surgical treatment for a cervical intramedullary tumor. Ependymoma can affect children, which is intracranial in about 90% of cases. Clear cell ependymoma displays an oligodendrogliallike appearance with perinuclear halos.
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