Diagnosis of meningiomas. Medical search. Frequent questions

Although the majority of meningiomas are benign , these tumors can grow slowly until they are very large, if left undiscovered, and, in some locations, can be severely disabling and life-threatening. (aans.org)
These tumors grow at a faster rate than benign meningiomas and are often characterized by brain invasion. (aans.org)
Meningioma comprises about one fourth of all primary tumors of the central nervous system (CNS). (medscape.com)
In meningiomas, one feature may be dominant over the other, and this phenomenon partly contributes to the rich diversification of histologic patterns in these tumors. (medscape.com)
Similar to other tumors, the risk factors for the development of meningiomas can be divided into those with clearly defined genetic etiology and those that are attributed to environmental and other nongenetic factors. (medscape.com)
Meningioma refers to a set of tumors that arise contiguously to the meninges (see the image below). (medscape.com)
On plain head CT scans, meningiomas are usually dural-based tumors that are isoattenuating to slightly hyperattenuating. (medscape.com)
The frequency of meningiomas in Africa is nearly 30% of all primary intracranial tumors. (medscape.com)
Spinal meningioma are tumors that most commonly appear in the mid-back (thoracic) region. (upmc.com)
Meningiomas account for approximately 25 percent of spinal canal tumors. (upmc.com)
UPMC neurosurgeons may also treat meningiomas with stereotactic spine radiosurgery , which is a minimally invasive technique that uses highly focused beams of radiation to target spinal tumors. (upmc.com)
Meningiomas are tumors of the meninges that can compress adjacent brain tissue. (msdmanuals.com)
Diagnosis of meningiomas is similar to that of other brain tumors, usually by MRI with a paramagnetic contrast agent. (msdmanuals.com)
Meningiomas are tumors of the meninges that are usually but not always benign. (msdmanuals.com)
Rhabdoid papillary meningiomas, encountered less often, should be distinguished from metastatic tumors of rhabdoid or papillary configuration, astrocytomas, ependymomas and atypical teratoid/rhabdoid tumor. (karger.com)
Meningioma is a condition that manifests through the occurrence of tumors. (vetinfo.com)
2 , 11 , 12 The blood supply of meningiomas usually arises from branches of the external carotid artery, except in cases of anterior and middle skull base tumors. (ajnr.org)
The radiological appearance of HPC resembles that of meningioma, but the pathological features resemble those of solitary fibrous tumors ( 6 ). (spandidos-publications.com)
Other lesions mimicking a convexity meningioma include hemangiopericytomas , primary bony tumors, dural-based metastases, and potentially lymphoma. (neurosurgicalatlas.com)
Radiosurgery may be used for small residual or recurrent tumors, for adjuvant treatment of higher-grade meningiomas, and for palliation in patients unable to tolerate surgical resection. (neurosurgicalatlas.com)
Meningiomas account for approximately 13-19% of all brain tumors. (medscape.com)
Welcome to APCC's neurosurgery website, where we describe spinal cord tumors - a complex group of conditions that demand expert diagnosis, tailored treatment, and a patient-centered approach. (apollohospitals.com)

Anaplastic meningiomas often shed most of the obvious features of meningiomas, and their diagnosis may be difficult. (medscape.com)
In the present work, we introduce a combination of mass spectrometry-based phosphoproteomics and peptide array kinomics to profile atypical and anaplastic (high-grade) meningiomas. (nature.com)
AKAP12 knockdown in benign meningioma cells SF4433 increases proliferation, cell cycle, migration, invasion, and confers an anaplastic profile. (nature.com)
Although most meningiomas are benign, 15-35% represents atypical or anaplastic forms 3 . (nature.com)
Anaplastic meningiomas lead to fatal outcomes despite surgery, radiation, and experimental medications. (nature.com)
In particular most WHO grade I meningiomas are benign, while grade III (anaplastic) are aggressive. (scientific-computing.com)
Grade 3 is Malignant (Anaplastic) Meningioma, which has the most aggressive rate of grow and highest risk of recurring. (seattleneuro.com)

Atypical meningiomas have a higher likelihood of recurrence than benign meningiomas (WHO grade I). (aans.org)
18F-FDG PET in the assessment of tumor grade and prediction of tumor recurrence in intracranial meningioma. (medscape.com)
Immediately after diagnosis, 24 patients were referred for radiation, and the remainder of the patients was referred after at least 1 recurrence. (medscape.com)
In the absence of a specific diagnosis, empiric recurrence risk figures, coupled with GJB2 and GJB6 molecular genetic testing results, may be used for genetic counseling. (nature.com)
Dr Bárbara Meléndez and her colleagues in the Unidad de Investigación de Patología Molecular (Molecular Pathology Research Unit) at Hospital Virgen de la Salud in Toledo, Spain, are using Qlucore Omics Explorer to investigate how generally benign meningiomas can start to exhibit the sort of histology and recurrence usually associated with more aggressive tumours. (scientific-computing.com)
So we are using Qlucore Omics Explorer in an effort to determine whether or not molecular analyses can be helpful in understanding prognosis - in terms of recurrence - and diagnosis. (scientific-computing.com)
Grade 1 is Benign Meningioma, which has the lowest rate of growth and recurrence risk. (seattleneuro.com)
Grade 2 is Atypical Meningioma, which is more aggressive in terms of growth and recurrence risk. (seattleneuro.com)

Atypical meningiomas (WHO grade II, which account for 18% of meningioma cases) exhibit increased tissue and cell abnormalities. (aans.org)
Malignant meningiomas (WHO grade III) show increased cellular abnormalities and grow at a faster rate than benign and atypical meningiomas. (aans.org)
Over 40% of atypical meningiomas will reoccur after gross resection. (nature.com)

No one in my family had ever had a history of tumours and I was just shell-shocked by this diagnosis, to say the least. (gulfnews.com)
Meningiomas located inside the bone of the calvaria belong to the group of rare types of tumours. (hindawi.com)
Due to their similarity to other tumours in this area, the imaging test of those tumours may constitute the source of an improper preoperative diagnosis. (hindawi.com)
Meningiomas primarily localized in the extrameningeal area constitute approximately 1.6% of tumours with 25% of the tumours being located in the area of the convexity [ 1 ]. (hindawi.com)
According to our own records, out of 14 cases of the bone tumours of the calvaria operated in the period from January 2004 to February 2014 at our Department of Neurosurgery, meningiomas constituted 21% of the cases. (hindawi.com)
These findings identify tumours that recur in the aggressive group, even if they have a benign histopathological diagnosis. (scientific-computing.com)
In addition to age at onset or age at diagnosis, NF2 disease severity is defined by the number of non-vestibular schwannoma cerebral tumours and of spinal tumours. (bmj.com)
However, treatment for more than one meningioma may be different as the tumours may be of different grades and have different growth rates. (thebraintumourcharity.org)
Other less frequent neurological diagnoses include syringomyelia, nonmalignancy-related hydrocephalus, tumours (including ependymoma, meningioma, astrocytoma, choroid plexus papilloma and pineal germinoma) and malformations such as Dandy-Walker and Arnold-Chiari malformations. (medscape.com)
Interphone was therefore initiated as an international set of case-control studies1 focussing on four types of tumours in tissues that most absorb RF energy emitted by mobile phones: tumours of the brain (glioma and meningioma), acoustic nerve (schwannoma) and parotid gland. (who.int)
Interphone was the largest case-control study to date investigating risks related to mobile phone use and to other potential risk factors for the tumours of interest and included 2,765 glioma, 2,425 meningioma, 1,121 acoustic neuroma, 109 malignant parotid gland tumour cases and 7,658 controls. (who.int)

Meningioma is a very common intracranial tumor that originates from arachnoid cells and is only less common than glioma [ 1 ]. (hindawi.com)
Figure 3: Relative distribution of the most common intracranial meningiomas is illustrated. (neurosurgicalatlas.com)

Although meningiomas commonly arise in locations where meningothelial cells are found, the embryonic origin of intraventricular and pulmonary meningiomas are intriguing. (medscape.com)
Intraventricular meningiomas probably arise from the meningothelial cells of the tela choroidea, where there is an arachnoidal invagination into the stromal base of the choroid plexus. (medscape.com)
In rare cases, meningiomas occur in an intraventricular or intraosseous location. (medscape.com)
Intraventricular chordoid meningioma presenting with Castleman disease due to overproduction of interleukin-6. (medscape.com)
Eom KS, Kim DW, Kim TY: Diffuse craniospinal metastases of intraventricular rhabdoid papillary meningioma with glial fibrillary acidic protein expression: a case report. (karger.com)

An olfactory groove meningioma is a rare benign tumor with a rather insidious course. (symptoma.com)

Meningioma in cats is a type of brain tumor. (vetinfo.com)

Differentially regulated pathways were characteristic of high-grade meningiomas. (nature.com)
High-grade meningiomas (II and III) do not respond well to surgery and lead to decreased survival. (nature.com)
Understanding pathways of oncogenesis that drive high-grade meningiomas is important to improve current diagnosis and treatment. (nature.com)
Meléndez explained: 'World Health Organisation (WHO) low grade meningiomas (grade I) and WHO high grade meningiomas (grades II and III) are different in their histopathlogy and prognosis. (scientific-computing.com)

Body mass index, physical activity, and risk of adult meningioma and glioma: A meta-analysis. (medscape.com)
Tumor diagnosis included low-grade glioma (n = 4, two with neurofibromatosis type 1), meningioma (n = 1), medulloblastoma (n = 1) and secondary high-grade glioma (n = 1). (rchsd.org)
Eligible cases were all residents of the study region diagnosed during the study period with a confirmed primary glioma, meningioma, or acoustic neuroma. (who.int)

Other evidence to substantiate the implication of gender-specific hormones comes from data showing increased growth of meningiomas during pregnancy and size changes with menses. (medscape.com)

Symptoms of meningiomas are caused by pressure from the growing tumor on the surrounding tissue. (upmc.com)
Symptoms of Meningiomas by. (msdmanuals.com)
The symptoms of meningiomas usually become noticeable only when the tumor has grown quite large. (seattleneuro.com)

A meningioma is a tumor that grows in the protective lining of the brain and spinal cord, called the meninges. (upmc.com)
Meningioma, also known as meningeal tumor, is typically a slow-growing tumor that forms from the meninges, the membranous layers surrounding the brain and spinal cord. (wikipedia.org)
Therefore, meningioma in the Rolandic area is more closely attached to meninges or veins. (hindawi.com)
A meningioma is a primary intracranial tumor of the meninges. (seattleneuro.com)

A systematic review of the literature regarding the clinical behavior of small, untreated meningiomas suggests that most meningiomas 2.5 cm or less in diameter do not proceed to cause symptoms in the 5 years following their discovery. (medscape.com)
Ibebuike K, Ouma J, Gopal R. Meningiomas among intracranial neoplasms in Johannesburg, South Africa: prevalence, clinical observations and review of the literature. (medscape.com)
Papillary meningioma: clinical and histopathological observations. (medscape.com)
Objective To assess the risk of meningioma associated with use of high dose cyproterone acetate, a progestogen indicated for clinical hyperandrogenism. (bmj.com)
Al-Habib A, Lach B, Al Khani A: Intracerebral rhabdoid and papillary meningioma with leptomeningeal spread and rapid clinical progression. (karger.com)
The reviewer diagnosis was compared with the working clinical diagnosis drawn from the medical history, SPECT scan result, long term follow-up and in some cases the known response to dopaminergic medications. (bmj.com)
in tertiary referral movement disorder clinics there is close to 100% concordance between the final clinical diagnosis and pathological findings. (bmj.com)
In a community based study in Wales, 3 only 53% of patients, treated with antiparkinson therapy in primary care, met the Queen Square Brain Bank criteria for the clinical diagnosis of PD when re-examined by an experienced movement disorder specialist. (bmj.com)
Optimizing Genetic Diagnosis of Neurodevelopmental Disorders in the Clinical Setting. (cdc.gov)
Comparative clinical and genomic analysis of neurofibromatosis type 2-associated cranial and spinal meningiomas. (cdc.gov)
Myelopathy is a clinical diagnosis with localization of the neurological findings to the spinal cord, rather than the brain or the peripheral nervous system, and then to a particular segment of the spinal cord. (bvsalud.org)

Meningiomas , as defined by the 2016 World Health Organization (WHO), are "a group of mostly benign, slow-growing neoplasms that most likely derive from the meningothelial cells of the arachnoid layer. (medscape.com)
The current trend is to separate unequivocal meningiomas from other less well-defined neoplasms. (medscape.com)
Meningiomas account for approximately 20% of all primary intracranial neoplasms. (medscape.com)

According to the records of the Department of Neurosurgery in Bielsko-Biała, 133 patients diagnosed with an intracranial meningioma confirmed by a histopathological test were operated in the last 10 years (2004-2014). (hindawi.com)
Consequently, MR imaging technology has been widely applied in the evaluation of postoperative tumor relapse in patients who receive neurosurgery operations such as meningioma. (hindawi.com)
Neurosurgery may be offered after a period of active monitoring or it can be offered straight away after diagnosis. (thebraintumourcharity.org)

Some meningiomas are found along the dural lining in the venous sinuses of the brain and skull base - locations where arachnoid cap cells are most abundant. (aans.org)
Meningiomas commonly are found at the surface of the brain, either over the convexity or at the skull base. (medscape.com)
Abdel Kerim A, Bonneville F, Jean B, Cornu P, LeJean L, Chiras J. Balloon-assisted embolization of skull base meningioma with liquid embolic agent. (medscape.com)
Meningiomas, which are usually benign, can develop wherever there is dura, most commonly over the convexities near the venous sinuses, along the base of the skull, and in the posterior fossa and rarely within ventricles. (msdmanuals.com)
Meningiomas located in the anterior skull base and middle skull base, particularly the medial third of the middle skull base, involving the spheno-orbital region, appeared to be specific to cyproterone acetate. (bmj.com)
1 - 11 Embolization becomes especially important when meningiomas are located at the skull base, because of the difficulties of bleeding management in this region. (ajnr.org)
Meningiomas of the anterior skull base constitute 40% of all intracranial meningiomas. (medscape.com)
Suitable for certain types of meningiomas located at the skull base, this technique ensures optimal tumor removal while preserving critical structures. (apollohospitals.com)

Although some of the observed variants, such as chondroid meningiomas, clear-cell meningiomas, papillary meningiomas, and rhabdoid meningiomas, are associated with unfavorable prognoses, the other histologic patterns are not indicators of unfavorable biologic behavior. (medscape.com)
Intracerebral cystic rhabdoid meningioma. (medscape.com)
Both rhabdoid and papillary meningioma are rare variants of meningioma categorized as WHO grade III. (karger.com)
Here, we report a rare case of combined rhabdoid papillary meningioma with discussion of its differential intraoperative cytologic diagnoses. (karger.com)
We also emphasize that the present case is the first case of rhabdoid papillary meningioma with primary manifestation in the spinal cord. (karger.com)
Kepes JJ, Moral LA, Wilkinson SB, Abdullah A, Llena JF: Rhabdoid transformation of tumor cells in meningiomas: a histologic indication of increased proliferative activity: report of four cases. (karger.com)
Hojo H, Abe M: Rhabdoid papillary meningioma. (karger.com)
Wakabayashi K, Suzuki N, Mori F, Kamada M, Hatanaka M: Rhabdoid cystic papillary meningioma with diffuse subarachnoid dissemination. (karger.com)
Wu YT, Ho JT, Lin YJ, Lin JW: Rhabdoid papillary meningioma: a clinicopathologic case series study. (karger.com)

The annual incidence of symptomatic meningiomas is approximately 2 cases per 100,000 individuals. (medscape.com)
Symptomatic meningiomas require some form of treatment. (upmc.com)
Symptomatic or enlarging meningiomas should be excised if possible. (msdmanuals.com)

Treatment decision making based on the published natural history and growth rate of small meningiomas. (medscape.com)
For asymptomatic small meningiomas, particularly in older adults, monitoring with serial neuroimaging is sufficient. (msdmanuals.com)

The less common malignant meningiomas are faster growing and may grow in the surrounding tissue. (upmc.com)
Malignant meningiomas are surgically removed whenever possible, while benign meningiomas are removed if they are large and/or causing problems. (upmc.com)
Long-term experience with World Health Organization grade III (malignant) meningiomas at a single institution. (medscape.com)
Long-term survival is possible for patients with atypical and malignant meningiomas treated with surgery and postoperative radiation. (medscape.com)
The series by Milosevic et al included the records of 59 patients who were treated at the Princess Margaret Hospital from 1966-1990 with histologically confirmed intracranial atypical or malignant meningiomas. (medscape.com)
Young age, modern imaging and treatment planning techniques, and postoperative radiation dose of at least 50 Gy contribute to improved outcome in patients with atypical or malignant meningiomas. (medscape.com)

With all the above features, it is not difficult to imagine that some meningiomas can be true imposters, histologically mimicking other entities. (medscape.com)
citation needed] Histologically, meningioma cells are relatively uniform, with a tendency to encircle one another, forming whorls and psammoma bodies (laminated calcific concretions). (wikipedia.org)

Intracerebral cystic meningioma--case report. (nih.gov)

Meningiomas are multiple in 5-40% of cases, particularly when they associated with neurofibromatosis type 2 (NF2). (medscape.com)

If a person is suspected of having a meningioma, a neurological exam will be done. (seattleneuro.com)
If you would like to discuss the diagnosis of a brain tumour and treatment options with a specialist neurological physiotherapist please phone us on 0161 883 0066 . (manchesterneurophysio.co.uk)

In general, the ideal treatment of a benign meningioma is surgical resection if possible. (medscape.com)
Main outcome measure Surgery (resection or decompression) or radiotherapy for one or more intracranial meningiomas. (bmj.com)
65 y) to younger patients, Black et al evaluated 114 patients undergoing meningioma resection divided into 2 groups, as follows: 57 patients aged 65-87 years and a control group of 57 patients aged 25-64 years matched by the American Society of Anesthesiology (ASA) status and tumor site. (medscape.com)
Preoperative embolization of meningiomas can reduce surgical blood loss, shorten operation length, reduce the risk of damage to surrounding structures, and increase the likelihood of complete tumor resection. (ajnr.org)
Surgical resection and postoperative radiotherapy and chemotherapy are the main methods for the treatment of meningioma, but surgical resection can only control the tumor locally. (hindawi.com)
Figure 2: Images of one of Harvey Cushing's patients who underwent resection of a left frontal hyperostotic meningioma. (neurosurgicalatlas.com)

This would also explain the high incidence of meningiomas around the sagittal sinus, which has a high concentration of meningothelial cells. (medscape.com)

however, several meningiomas may simultaneously grow in other parts of the brain or spinal cord. (seattleneuro.com)

Spinal x-rays can detect a meningioma, and CT scans and MRI scans are usually used to provide more detail about the tumor size, location, and effects on the surrounding tissue. (upmc.com)
The unique structure of the tissue of this benign tumour, containing cells with cystic contents, causes interpretative difficulties already at the stage of an imaging diagnosis where the tumour needs to be differentiated from other intraosseous pathology. (hindawi.com)
At present, the main method of imaging assessment of meningioma invasion of brain tissue is also MRI. (hindawi.com)
The diagnosis may also be confirmed by examining a tissue sample taken from the tumor in a procedure called a biopsy. (seattleneuro.com)

A cystic meningioma that grows within the cerebral hemispheres. (nih.gov)
Convexity meningiomas develop from the leptomeninges of the cerebral convexities over all lobes of the brain and represent 15-20% of intracranial meningiomas. (neurosurgicalatlas.com)

This study assesses the safety and efficacy of preoperative embolization of meningiomas fed by the OPH by using Onyx liquid embolic agent. (ajnr.org)

Other forms of meningioma may be more aggressive. (aans.org)
The oncofetal protein IMP3: a novel molecular marker to predict aggressive meningioma. (medscape.com)
The research has led to a discovery, as Meléndez explained: 'Expression analyses allowed us to identify that meningiomas can be classified into an aggressive and a non-aggressive group - despite WHO classification criteria establishing three malignancy groups and about 15 histopathological subtypes. (scientific-computing.com)

The etiology of most meningiomas, however, remains unclear. (medscape.com)
A common etiology for meningiomas is radiation exposure in the range of 132-315 roentgens, which is equivalent to rad dose of 1-3 Gy. (medscape.com)
The progesterone receptor is the best candidate as an etiology for meningiomas. (medscape.com)

Meningioma in cats is often a benign tumor, but there are exceptions also. (vetinfo.com)
Surgery is often successful in treating meningiomas because they are a benign tumor with defined boundaries. (seattleneuro.com)

As the rate of acquired hearing loss secondary to environmental causes decreases and improvements in the diagnosis of abnormalities occur, the significance of genetic factors that lead to deafness increases. (nature.com)
Loss of DNA on chromosome 22 has been shown in 40% of meningiomas, and, in cytogenetic studies, genetic abnormalities at the level of chromosome 22 are seen frequently in meningiomas with loss of a copy of chromosome 22 as the most commonly reported abnormality. (medscape.com)
Those who evaluate patients with MCS are reminded that meningiomas and other intracranial mass lesions can affect olfaction, and that patients with MCS can have treatable intracranial abnormalities. (cdc.gov)

Figure 4: Typical imaging presentation of a convexity meningioma: an intensely homogenously enhancing dural-based tumor with dural tails. (neurosurgicalatlas.com)

UPMC offers several treatment options for meningioma, including minimally invasive surgery and stereotactic radiosurgery, offering benefits such as minimal scarring, fewer side effects, and faster recovery. (upmc.com)
Majchrzak K, Tymowski M. Surgical treatment of the tentorial and falco-tentorial junction meningiomas. (medscape.com)
The following study presents the case of a microcystic meningioma found in a 59-year-old woman who underwent a successful surgical treatment. (hindawi.com)
This diagnosis will be essential in establishing the best course of treatment. (vetinfo.com)
Early diagnosis and treatment could prevent mortality and morbidity. (bmj.com)
It's important to talk with your health care team and your loved ones about your diagnosis and treatment and the impact it has on you. (cancer.gov)
They can help you learn about your diagnosis and treatment. (cancer.gov)
Being diagnosed with a meningioma can often signal a whirlwind of medical appointments, scans and treatment plans, usually at a time when your life is in turmoil. (brainstrust.org.uk)
To sum up, the microsurgical treatment helped improve the quality of life of patients with Rolandic meningioma, and MR imaging could be used to determine the relapse of Rolandic meningioma after microsurgical treatment. (hindawi.com)
According to some explorations, the relapse rate of patients with meningioma after surgical treatment is over 20% [ 5 ]. (hindawi.com)
In the surgical treatment of patients with Rolandic meningioma, the functional area cortex and central sulcus vein need to be protected. (hindawi.com)
In order to investigate the value of MRI in evaluating the efficacy of microsurgical treatment of patients with meningioma, patients with Rolandic meningioma treated by microsurgery were selected as the study subjects. (hindawi.com)
The journal provides a global platform that deals with all extensive works and research related to all areas of minimally invasive surgery, endoscopy, treatment, and diagnosis. (researchgate.net)
6 Fourth, none of the studies examined potential confounding factors (such as type of treatment centre and constitutional NF2 mutation type) that can affect age at onset, age at diagnosis, or mortality. (bmj.com)
Your medical team will consider a range of factors about your meningioma when deciding the most appropriate treatment. (thebraintumourcharity.org)
What treatment do people diagnosed with a meningioma usually have first? (thebraintumourcharity.org)
If you've just been diagnosed with a meningioma and are about to have treatment, you may want to see what other people's first treatment was. (thebraintumourcharity.org)
Active monitoring (also known as watch and wait) is frequently the treatment approach used for grade 1 meningiomas. (thebraintumourcharity.org)
Surgery is generally the standard treatment option for meningiomas. (seattleneuro.com)
These guidelines update previous CDC recommendations for the diagnosis, treatment, and prevention of tuberculosis (TB) among adults and children coinfected with human immunodeficiency virus (HIV) in the United States. (cdc.gov)
Early diagnosis and effective treatment of TB among HIV-infected patients are critical for curing TB, minimizing the negative effects of TB on the course of HIV, and interrupting the transmission of Mycobacterium tuberculosis to other persons in the community. (cdc.gov)
Disclaimer: The ACR Committee on Appropriateness Criteria and its expert panels have developed criteria for determining appropriate imaging examinations for diagnosis and treatment of specified medical condition(s). (bvsalud.org)
Major treatment centres for the diseases of interest are concentrated in these areas and most of the population is unlikely to go out of the region for diagnosis and treatment. (who.int)
Childhood tuberous sclerosis complex in southern Sweden: A paradigm shift in diagnosis and treatment. (lu.se)
Early diagnosis and treatment usually leads to a better outcome. (medlineplus.gov)

Developmental lesions such as heterotopia of meningothelial cells in the scalp are believed to be the origin of meningiomas under the scalp and skin of the head. (medscape.com)

This strategy was used to better understand the underlying mechanisms of meningioma malignancy, aid in the development of novel therapies and markers of poor prognosis. (nature.com)

From February 2008 to January 2010, 5 patients with untreated intracranial meningiomas fed mainly by OPH branches underwent preoperative embolization with Onyx-18 at our institution. (ajnr.org)

Meningiomas are also usually benign, meaning that they grow slowly, but if they are not discovered on a timely basis, they can interfere with the brain's normal functioning. (seattleneuro.com)

Hormonal factors (eg, estrogen, progesterone) have been studied extensively as risk factors for meningiomas because of the striking predominance of meningiomas in women. (medscape.com)

Meningothelial (arachnoidal) cells are believed to be the cell of origin of meningiomas. (medscape.com)
The problem of classifying meningioma is that arachnoidal cells may express both mesenchymal and epithelial characteristics. (medscape.com)
Meningiomata arise from arachnoidal cap cells, most of which are near the vicinity of the venous sinuses, and this is the site of greatest prevalence for meningioma formation. (wikipedia.org)

The dura is opened, and the meningioma can be seen extending en plaque over the surface of the brain. (medscape.com)
Meningiomas are the only brain tumor more common among women. (msdmanuals.com)
Meningiomas compress but do not invade brain parenchyma. (msdmanuals.com)
Participants had at least one reimbursement for high dose cyproterone acetate and no history of meningioma or benign brain tumour, or long term disease status. (bmj.com)
This case demonstrates an uncommon presentation of meningioma, the most common primary brain tumour. (bmj.com)
A brain or spine tumor diagnosis can impact the connections you have with those close to you. (cancer.gov)
Meningioma can occur anywhere in the brain. (hindawi.com)
A diagnosis of parkinsonism was made if the step 1 criteria of the Queen Square Brain Bank criteria for Parkinson's disease were fulfilled. (bmj.com)
Since meningiomas may not exhibit any symptoms, they might be detected unexpectedly when a patient has a brain scan for unrelated symptoms. (seattleneuro.com)

Therefore, some patients die with meningioma and not from it. (medscape.com)
Outpatient follow-up care of patients with optic nerve sheath meningioma (ONSM) includes visual acuity testing and field testing, in addition to an imaging study in the form of MRI with gadolinium, preferably every year to check for recurrent disease. (medscape.com)
Of these, 36 patients died of meningioma, and 3 patients were alive after further surgery. (medscape.com)
They attributed the lower morbidity and mortality rates after meningioma surgery in elderly patients to better patient selection and surgical techniques and to better preoperative and postoperative care by health care providers. (medscape.com)
In these charts the number of patients for every 100 diagnoses is displayed as images of people. (brainstrust.org.uk)
For each group of patients you can explore the different routes to diagnosis, the proportion of those who received chemotherapy or radiotherapy, as well as the survival of the patients within each group. (brainstrust.org.uk)
In this study, magnetic resonance imaging (MRI) was used to evaluate the relapse features of patients with Rolandic meningioma after the microsurgery. (hindawi.com)
53 patients with Rolandic meningioma were selected as the research objects, and they were divided into the relapse group ( n = 16) and nonrelapse group ( n = 37) according to whether patients had a relapse during the follow-up period. (hindawi.com)
The relapse rate and disability rate of patients with Rolandic meningioma are much higher than those of patients with convex meningioma [ 6 ]. (hindawi.com)
Characteristics of radiation-induced meningiomas include an average latent period of 36-38 years for patients who were exposed to low-dose radiation to the head, whereas patients who develop meningiomas after exposure to high-dose radiation may show signs as early as 5 years postradiation. (medscape.com)

Meningiomas may occur intracranially or within the spinal canal. (medscape.com)
Monosomy of chromosome 22 has been reported to occur in 70-80% of meningiomas. (medscape.com)
Optic nerve and cavernous sinus meningiomas are uncommon pathologies, and so far there have not been previously reported to occur in the same patient. (bvsalud.org)

Pieper DR, Al-Mefty O, Hanada Y, Buechner D. Hyperostosis associated with meningioma of the cranial base: secondary changes or tumor invasion. (medscape.com)
These meningiomas may be associated with hyperostosis of the sphenoid ridge and may be very invasive, spreading to the dura of the frontal, temporal, orbital, and sphenoidal regions. (medscape.com)

Ayodele A, Convexity meningioma. (radiopaedia.org)
Similarly, convexity meningiomas were among the earliest accessible surgical targets in our profession. (neurosurgicalatlas.com)
Convexity meningiomas are frequently found incidentally on unrelated imaging studies, but may present with focal neurologic findings or epileptic activity of the underlying cortex. (neurosurgicalatlas.com)

Data on biodata, source of referral, diagnosis, visual acuity at presentation and management were recorded and analyzed for simple frequency using the SPSS version 11. (bvsalud.org)

Loss of heterozygosity on chromosome 22q and 17p correlates with aggressiveness of meningiomas. (medscape.com)
These results demonstrate AKAP12 as a central regulator of meningioma aggressiveness with a possible role in progression. (nature.com)
To map the mechanisms of aggressiveness we aimed to investigate changes in protein phosphorylation across WHO grades of human meningiomas. (nature.com)

Three meningiomas were located at the olfactory groove, 1 meningioma at the left lesser sphenoid wing, and 1 meningioma in the right sphenoid ring. (ajnr.org)

After removal of a meningioma in the patient's history, scalp metastasis from the previously resected meningioma should be considered. (omicsonline.org)
Some meningiomas may never exhibit symptoms during a patient's lifetime. (seattleneuro.com)
Removal of the meningioma had little effect on the patient's symptoms. (cdc.gov)

Coronal T1-weighted MRI with gadolinium enhancement of a sphenoid wing meningioma with some degree of encasement of bilateral cavernous sinuses. (medscape.com)
Sphenoid wing meningiomas, or ridge meningiomas, are the most common of the basal meningiomas. (medscape.com)

Stereotactic radiosurgery is used for surgically inaccessible meningiomas and electively for other meningiomas. (msdmanuals.com)
If stereotactic radiosurgery is impossible or if a meningioma recurs, radiation therapy may be useful. (msdmanuals.com)
With multiple meningiomas, there's also the possibility of stereotactic radiosurgery . (thebraintumourcharity.org)

The preoperative embolization of meningiomas supplied by the OPH requires superselective catheterization and the most distal placement of the microcatheter as possible, aiming to protect the central retinal artery of any reflux. (ajnr.org)
3 , 14 - 18 This article reports our experiences with the preoperative embolization of meningiomas fed by OPH branches by using Onyx (ev3, Irvine, California). (ajnr.org)

These variations are called meningioma subtypes - the technical term for these cell variations is histological subtypes. (aans.org)

Anatomy20

Diseases38

Chemicals and Drugs18

Analytical, Diagnostic and Therapeutic Techniques and Equipment50

Phenomena and Processes16

Disciplines and Occupations2

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture1

Information Science6

Named Groups1

Health Care19

Tumors22

Anaplastic7

Recurrence8

Atypical meningiomas3

Tumours11

Common intracranial2

Intraventricular5

Olfactory Groove Meningioma1

Type of brain tumor1

High-grade meningiomas4

Glioma3

Growth of meningiomas1

Symptoms of Meningiomas3

Meninges4

Clinical11

Neoplasms3

Neurosurgery3

Skull8

Rhabdoid9

Symptomatic3

Small meningiomas2

Malignant meningiomas6

Histologically2

Intracerebral1

Neurofibromatosis1

Neurological2

Resection6

Incidence1

Spinal cord1

Tissue4

Cerebral2

Liquid embolic agent1

Aggressive3

Etiology3

Benign tumor2

Abnormalities3

Dural-based1

Treatment25

Lesions1

Prognosis1

Underwent1

Usually benign1

Risk Factors1

Arachnoidal3

Brain9

Patients10

Occur3

Hyperostosis2

Convexity3

Visual acuity1

Aggressiveness3

Lesser sphenoid1

Patient's3

Sphenoid2

Stereotactic3

Preoperative2

Subtypes1