National Cancer Institute study: evaluation of computed tomography in the diagnosis of intracranial neoplasms. IV. Meningiomas.

New, P F; Aronow, Saul; Hesselink, John R.

doi:10.1148/radiology.136.3.7403545

Cited by 87 publications

(33 citation statements)

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“…Tumours with a close relationship to subarachnoid cisterns, e. g., suprasellar and petroclivar meningiomas, reveal only a slight inclination for the development of meningioma-related oedema, even when they were large. This observation was made by other investigators as well [21]. Intraventricular meningiomas may enlarge the affected ventricles, but are rarely associated with PTBOe [22].…”

Section: Discussionsupporting

confidence: 54%

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Peritumoural brain oedema in intracranial meningiomas: Influence of tumour size, location and histology

et al. 1997

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Peritumoural brain oedema was examined retrospectively in 175 patients with 179 intracranial meningiomas. The influence of tumour size, location and histology were investigated. Tumour volume and localization, and the presence of peritumoural brain oedema (PTBOe) were determined by computed tomography (CT). The oedema-tumour volume ratio was defined as Oedema Index (Oel). All patients underwent microsurgical removal of the tumour. Surgically resected meningiomas were classified histopathologically based on criteria of the new World Health Organization (WHO) classification. A close relationship was found between the tumour size and the incidence of peritumoural oedema: with increasing size of the tumour the incidence of oedema also rises, the oedema index, however decreases. Frontobasal and temporobasal meningiomas showed a significant increase in the oedema incidence and the mean oedema index. If major parts of the surface of meningiomas were adjacent to subarachnoid cisterns only a slight tendency for the development of oedema was observed. WHO-III-meningiomas showed a significantly higher oedema incidence (61.1% vs. 94.4%; p < 0.004) and mean oedema index (Oel = 2.7 vs. 3.7; p < 0.0009) than WHO-I-meningiomas. Brain tissue was affected in 59 cases. 19 meningiomas with infiltration into adjacent brain parenchyma revealed a statistically significant increase in oedema incidence (94.7% vs. 51.7%; p < 0.0003) and mean oedema index (Oel = 3.9 vs. Oel = 2.2; p < 0.0001) when compared to tumours without any brain tissue involvement in the histopathological specimens. Tumours with large volume, fronto-temporo-basal location and anaplastic histology were not only associated with the highest incidence of oedema formation but also presented with an overproportionate infiltrative growth. Thus, a disruption of the arachnoid or a true brain infiltration may be an essential factor for the development of a PTBOe.

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Section: Discussionsupporting

confidence: 54%

“…Different studies examining the correlation of tumour volume and oedema come to dissenting results: some investigators find no relationship [5,6,8,13,21,27], whereas others do [7,9,15,25]. In the present study an increasing tumour size correlated closely with an increasing oedema incidence and a decreasing oedema index.…”

Section: Discussioncontrasting

confidence: 48%

Peritumoural brain oedema in intracranial meningiomas: Influence of tumour size, location and histology

et al. 1997

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“…Calcification in meningiomas may take the form of diffuse psammomatous-type, irregular, patchy calcification; ring calcification; nodular calcification; and solid calcification. 20 Although it is theoretically possible for multiple punctate calcifications to mimic the appearance of microhemorrhages on T2*-weighted GRE image, one should be able to exclude this possibility with a CT scan. The 3D susceptibility-weighted gradient sequence should offer an additional benefit in showing more microhemorrhages than T2*-weighted GRE.…”

Section: Discussionmentioning

confidence: 99%

Intratumoral Microhemorrhages on T2*-Weighted Gradient-Echo Imaging Helps Differentiate Vestibular Schwannoma From Meningioma

Thamburaj

Radhakrishnan

Thomas

et al. 2007

AJNR Am J Neuroradiol

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“…CT and MRI examinations were evaluated retrospectively according to findings known to be indicative for the diagnosis of meningiomas from the literature [5][6][7][8][9][10][11][12][13]. The tumor was characterized as homogeneous if a homogeneous enhancement of the non-calcified soft-tissue components was present.…”

Section: Discussionmentioning

confidence: 99%

Intracranial meningiomas: How frequent are indicative findings in CT and MRI?

et al. 1990

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Frequencies of CT and MRI findings characteristic of meningiomas were compared in 50 cases. Plain and contrast enhanced examinations with CT and MRI were evaluated retrospectively regarding 12 criteria known to be indicative of the diagnosis of meningiomas. CT proved to be superior in demonstrating calcifications and a typical tumor density. On the other hand. MRI was better suited for identifying the extraaxial location of tumors, the broad contact of tumors to the meninges, tumor capsules and meningeal contrast enhancement adjacent to the tumor. Both methods provided nearly equal results in demonstrating mass effects, hyperostoses, intensive and homogeneous contrast enhancement, and smooth tumor contours after contrast administration. On the whole, neither of the two methods demonstrated a universal superiority for the diagnosis of intracranial meningiomas. Rather, each method displayed distinct advantages.

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National Cancer Institute study: evaluation of computed tomography in the diagnosis of intracranial neoplasms. IV. Meningiomas.

Cited by 87 publications

References 0 publications

Peritumoural brain oedema in intracranial meningiomas: Influence of tumour size, location and histology

Peritumoural brain oedema in intracranial meningiomas: Influence of tumour size, location and histology

Intratumoral Microhemorrhages on T2*-Weighted Gradient-Echo Imaging Helps Differentiate Vestibular Schwannoma From Meningioma

Intracranial meningiomas: How frequent are indicative findings in CT and MRI?

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