Dural involvement in primary extradural meningiomas of the cranial vault

Bassiouni, Hischam; Asgari, Siamak; Hübschen, Uwe; König, H.-J.; Stolke, D.

doi:10.3171/jns.2006.105.1.51

Cited by 40 publications

(45 citation statements)

References 94 publications

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“…Tumours which are localized in the extrameningeal area, including the intraosseous area, have been known as ectopic tumours [1, 9]. On the basis of their own case studies and the analysis of the professional literature, Lang et al [1] named those tumours as primary extradural meningiomas and suggested the classification into type I (purely extracalvarial), type II (purely calvarial), and type III (calvarial with extracalvarial extension).…”

Section: Discussionmentioning

confidence: 99%

“…The studies discussing other histological variants of intraosseous meningiomas observed in the CT examination described both the osteolytic and the osteosclerotic lesions [9–15]. …”

Section: Discussionmentioning

confidence: 99%

“…In the case of other variants of intraosseous meningiomas, the MR images are not characteristic and according to other authors they are important in determining the exact location of the lesion and specifying the localization of the tumour with respect to the dura mater [9–12, 14]. …”

Section: Discussionmentioning

confidence: 99%

“…In their study involving the retrospective analysis of 16 patients diagnosed with primary extrameningeal meningiomas, who were undergoing treatment in two centres in the period from 1992 to 2004, Bassiouni et al [9] indicate that the MR imaging revealed contrast enhancement adjacent to the intraosseous meningioma of the dura mater in 11 patients. In turn, the intraoperative examination revealed the tumour infiltration into the dura mater in 14 patients [9].…”

Section: Discussionmentioning

confidence: 99%

“…In turn, the intraoperative examination revealed the tumour infiltration into the dura mater in 14 patients [9]. …”

Section: Discussionmentioning

confidence: 99%

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Microcystic Variant of an Intraosseous Meningioma in the Frontal Area: A Case Report

Bujok

Bienioszek²

2014

Case Reports in Neurological Medicine

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Meningiomas located inside the bone of the calvaria belong to the group of rare types of tumours. The microcystic variant is the least common in this area. 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. 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). In the histopathological test, three patients were diagnosed with the microcystic variant, which constitutes 2.25% of the cases. Only one variant of microcystic meningioma was located inside the bone, which constitutes 0.75% of all the meningiomas operated.

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Section: Discussionmentioning

confidence: 99%

“…The studies discussing other histological variants of intraosseous meningiomas observed in the CT examination described both the osteolytic and the osteosclerotic lesions [9–15]. …”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…In turn, the intraoperative examination revealed the tumour infiltration into the dura mater in 14 patients [9]. …”

Section: Discussionmentioning

confidence: 99%

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Microcystic Variant of an Intraosseous Meningioma in the Frontal Area: A Case Report

Bujok

Bienioszek²

2014

Case Reports in Neurological Medicine

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Treatment recommendations for primary extradural meningiomas

Mattox

Hughes

Oleson

et al. 2010

Cancer

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Highly reflective, surface‐metalized, flexible polyimide films were prepared by the incorporation of a soluble silver‐ion complex, (hexafluoroacetylacetonato)silver(I) (AgHFA), into dimethylacetamide solutions of poly(amic acid) prepared from 2,2‐bis(3,4‐dicarboxyphenyl)hexafluoropropane dianhydride and 2,2‐bis[4‐(4‐aminophenoxy)phenyl]hexafluoropropane. The thermal curing of solution‐cast silver(I)–poly(amic acid) films to 300°C led to cycloimidization of the amic acid with concomitant silver(I) reduction and the formation of a reflective, air‐side‐silvered surface at very low (2 wt % and 0.3 vol %) silver concentrations. The reflective surface evolved only when the cure temperature reached about 275°C, although X‐ray diffraction showed metallic silver in the hybrid film by 200°C. After a maximum specular reflectivity greater than 80% was achieved for the 2 wt % silver film, the specular reflectivity diminished sharply with further heating at a constant temperature of 300°C. Incorporating the AgHFA complex into the soluble, fully imidized form of poly{(1,3‐dihydro‐1,3‐dioxo‐2H‐isoindole‐2,5‐diyl)[2,2,2‐trifluoro‐1‐(trifluoromethyl)ethylidene](1,3‐dihydro‐1,3‐dioxo‐2H‐isoindole‐5,2‐diyl)‐1,4‐phenyleneoxy‐1,4‐phenylene[2,2,2‐trifluoro‐1‐(trifluoromethyl)ethylidene]‐1,4‐phenyleneoxy‐1,4‐phenylene} gave films that were 25% less reflective than those beginning with poly(amic acid). Though highly reflective, the films were not electrically conductive. The metalized membranes were thermally stable and maintained mechanical properties similar to those of the parent polyimide. Transmission electron microscopy revealed an air‐side, near‐surface layer of silver that was about 40 nm thick; the interior of the film had well‐dispersed metal particles with diameters mostly less than 2 nm. The near‐surface silver layer maintained its integrity because of physical entrapment of the metal nanoparticles beneath a thin layer of polyimide; that is, the practical adhesion of the metal layer was good. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2409–2418, 2007

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