Extradural thoracic spinal meningioma

Santiago, Bruno; Rodeia, Paula; E, Manuel Cunha

doi:10.4103/0028-3886.48802

Cited by 16 publications

(12 citation statements)

References 2 publications

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“…[40455166] Reviewing the literature, 44 studies have described 100 patients with extradural spinal meningioma [Table 1]. However, because many reports used different criteria to differentiate between partially and completely extradural lesions, it is difficult to get their real frequency, which may be lower than that already presented.…”

Section: Discussionmentioning

confidence: 99%

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Dorsal extradural meningioma: Case report and literature review

et al. 2016

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Background:Extradural spinal mass lesions are most commonly metastatic tumors. Extradural meningiomas are rare, accounting for approximately 2.5–3.5% of spinal meningiomas; intraoperatively, they are easily mistaken for malignant tumors, especially in the en plaque variety, resulting in inadequate surgical treatment.Case Description:Our case is one of the first to describe a patient with two purely extradural meningiomas, one each between D3–D4 and between D5–D6 vertebral levels. Surgical resection was radical, and pathologically both lesions were meningothelialmeningiomas.Conclusions:Reviewing the literature, we discuss the pathogenesis, treatment strategies, and long-term behavior of these uncommon lesions.

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Section: Discussionmentioning

confidence: 99%

“…[24] Extradural spinal meningiomas are very rare and account for only 2.5–3.5% of all spinal meningiomas. [405166] Multiple spinal meningiomas also occur rarely.…”

Section: Introductionmentioning

confidence: 99%

Dorsal extradural meningioma: Case report and literature review

et al. 2016

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“…[3] Spinal meningiomas are predominantly ventrally or ventrolaterally placed intradural extramedullary lesions. [2] They may have an extradural component in approximately 10% of cases; but an exclusively extradural meningioma is an uncommon entity. [5] This entity assumes significance in the context that extradural spinal lesions are most commonly metastatic neoplasms (including lymphoma), and hence, the correct intraoperative identification is indispensible for instituting the correct treatment strategy.…”

Section: Discussionmentioning

confidence: 99%

“…Attention needs to be drawn to this dangerous preoperative and intraoperative misinterpretation, which may easily entail an inadequate therapy. [12]…”

Section: Discussionmentioning

confidence: 99%

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Totally extradural spinal en plaque meningiomas - Diagnostic dilemmas and treatment strategies

et al. 2014

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Background:Meningiomas are the second most common intraspinal tumors, constituting ~25% of all intraspinal tumors; however, in the context of extradural spinal lesions, the diagnosis of meningioma is an uncommon one. Purely extradural spinal meningiomas, especially of the en plaque variety, frequently mimic metastatic disease and may result in inadequate therapy.Case Description:We report two cases of totally extradural en-plaque meningiomas of the spine, one each in the cervical and dorsal spine. We present the significant diagnostic dilemmas posed by these cases and discuss the pathogenesis, treatment strategies, and long-term behavior of these uncommon lesions.Conclusion:Attention needs to be drawn to this dangerous preoperative and intraoperative misinterpretation. Intraoperative histopathology support for correct identification, gross total resection at surgery, inclusion of a durotomy to rule out intradural extension, and long-term follow-up are cornerstones for successful management of totally extradural en plaque spinal meningiomas.

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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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Extradural thoracic spinal meningioma

Cited by 16 publications

References 2 publications

Dorsal extradural meningioma: Case report and literature review

Dorsal extradural meningioma: Case report and literature review

Totally extradural spinal en plaque meningiomas - Diagnostic dilemmas and treatment strategies

Treatment recommendations for primary extradural meningiomas

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