background and objective: histological grading has prognostic and therapeutic implications in meningioma. however, histological criteria are sometimes not fulfilled to predict the biological behavior of meningiomas. p63 gene is a novel p53 family member, known as tumor suppressor factor, with multiple isoforms and shows high expression in many normal and neoplastic human tissues. in this study,...

Calcification of gastric carcinoma is unusual and most of the reported cases were of the mucinous type. This report describes two cases of papillo-tubular adenocarcinoma of the stomach with psammomatous calcification confined only to the papillary portion. Calcification was so heavy that specimen X-ray was able to clearly delineate its distribution. Microscopically, the calcification was confin...

BACKGROUND The treatment strategy for patients with an asymptomatic meningioma is still controversial. Key to an optimal decision is a careful evaluation of the growth possibilities of the meningioma by taking the patient's clinicoradiologic factors into consideration. However, previous studies have disagreed about the risk factors relating to tumor growth. METHODS A comprehensive search of P...

Polymorphic variants of genes involved in folate metabolism are implicated in the susceptibility to meningioma and glioma, but the results from published articles are controversial and inconclusive. Therefore, we performed this meta-analysis including all studies available to evaluate the relationship between folate metabolism genetic polymorphisms and the susceptibility to meningioma and gliom...

BACKGROUND AND PURPOSE This study assesses the cytotoxicity of hyperosmolar mannitol on human endothelial and meningioma cells in vitro and summarizes the initial clinical experience of using mannitol as a liquid tumor embolization agent. METHODS Human umbilical vein endothelial cells and primary meningioma cells from surgical specimens were treated with 300, 600, 900, and 1200 mOsm of mannit...

Meningiomas have often been described as being hormone dependent because of their preponderant incidence in females with clinical manifestation during or after pregnancy. The authors have experienced three cases of meningioma which became symptomatic during pregnancy, after delivery, or during menses. Estrogen receptor protein and progesterone receptor protein of the meningioma tissue were exam...

The beta receptor subunit of platelet-derived growth factor (PDGF) and its corresponding ligand (PDGF-BB) are coordinately expressed in fresh surgical isolates of human meningioma. These observations imply that PDGF autocrine loops are engaged in human meningioma and suggest that activated PDGF-beta receptors might contribute to the pathology of this common brain neoplasm. The study of PDGF aut...

Meningioma is a neoplasm derived from meningothelial cells. Grade1 meningiomas consist 9 different subtypes. One of the rare subtypes is metaplastic meningioma. Metaplastic meningioma could be defined as ''xanthomatous meningioma'' in the presence of prevalent xanthomatous changes. A 32 years old male patient had admitted to outpatient clinics with complaints of vertigo and tinnitus. Magnetic r...

Accepted, July 22, 2005. Meningiomas are the most frequently reported primary intracranial neoplasms, accounting for approximately 25% of all such lesions diagnosed in the United States. Few studies have examined the risk factors associated with a diagnosis of meningioma with two categories of exposure, hormones (both endogenous and exogenous) and radiation, most strongly associated with mening...

Background: Meningiomas are common central nervous system (CNS) tumors that account for thirty percent of primary intracranial tumors.. The accuracy of predicting meningioma recurrence and progression is not enough. So, there is a real need for discovering recent factors for identification of the relapse risk, progression rates, which patients will need aggressive treatment and predicting and i...