Clear-cell meningioma is a rare subtype of meningioma which occurs at a younger age and has a higher recurrence rate than other subtypes. We report two cases of clear-cell meningioma, one in the thoracolumbar spinal canal and the other in the cerebellopontine angle. Though the CT and MR imaging findings were not different from those of ordinary meningioma, after surgical removal the condition r...

introduction: meningioma is a benign and slowly-growing tumor that is responsible for 20% of brain neoplasms. it can be accompanied by some genetic disorders such as neurofibromatosis type 2 and is more common among women. as a space occupying lesion, it produces a wide range of signs and symptoms by compressing the adjacent and underlying tissues in the brain. trauma and viruses are possible e...

OBJECT The 2-fold higher incidence of meningioma in women compared with men has long suggested a role for hormonally mediated risk factors, but specific mechanisms remain elusive. METHODS The study included data obtained in 1127 women 29-79 years of age with intracranial meningioma diagnosed among residents of Connecticut, Massachusetts, North Carolina, the San Francisco Bay Area, and 8 Texas...

Rhabdoid meningioma is a rare aggressive variant of meningioma, regarded as WHO Grade III type. Histologically and cytologically, it is distinctive type having abundant eosinophilic cytoplasm, cytoplasmic inclusion with eccentrically placed vesicular nuclei and prominent nucleoli. High recurrence rate and poor outcome are important features. Here, we are presenting a rare case of rhabdoid menin...

Rhabdoid meningioma is a rare aggressive variant of meningioma, regarded as WHO grade III type. Histologically and cytologically, it is distinctive type having abundant eosinophilic cytoplasm, cytoplasmic inclusion with eccentrically placed vesicular nuclei and prominent nucleoli. High recurrence rate and poor outcome are important features. Here we are presenting a rare case of rhabdoid mening...

Multiple pulmonary metastases from meningioma are rare. We report here a 59-year-old man with multiple pulmonary metastases from a recurrent intracranial meningioma. The primary intracranial tumour in the left occiput was totally excised in 2009. Pathological examination confirmed the diagnosis of atypical meningioma and adjuvant radiotherapy was given to help prevent recurrence. However, recur...

introduction: radiotherapy is a common treatment modality for patients with head and neck malignancies. as the nose lies within the field of radiotherapy of the head and neck, the olfactory fibers and olfactory receptors may be affected by radiation. the aim of this study was to evaluate changes in olfactory threshold in patients with head and neck malignancies who have received radiation to th...

We describe a case of anaplastic meningioma presenting in an extracranial osseous location, initially diagnosed as cancer of unknown primary. Although anaplastic meningioma comprise 3% of all meningiomas, this subtype is more likely to be associated with metastases. The increased degree of dedifferentiation in anaplastic meningioma makes diagnosis difficult, especially if characteristic imaging...

background: meningioma is among the most common slow growing central nervous neoplasms, which recurs locally despite the benign histologic features. the aim of this study was to evaluate osteopontin and ki67 expressions in different histologic grades of meningioma in a group of iranian people. methods: in this cross-sectional study, first, the paraffin blocks with the definite pathological diag...

Current staging methods are inadequate for predicting the overall survival of meningioma. DNA microarray technologies improve the understanding of tumour progression. We analysed genome wide expression profiles of 119 meningioma samples from two previous published DNA microarray studies. The Cox proportional hazards regression models were applied to identify overall survival related gene signat...