The dural tail sign—beyond meningioma

Guermazi, Ali; Lafitte, F.; Miaux, Y; Adem, Camilo; Bonneville, J. F.; Chiras, J.

doi:10.1016/j.crad.2004.01.019

Cited by 118 publications

(65 citation statements)

References 35 publications

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“…However, this sequestrum is also described in other diseases, e. g. in osteomyelitis, metastases, and epidermoid cysts [37]. After contrast administration, eosinophilic granulomas can demonstrate reactive dural ("dural tail sign") and galeal contrast enhancement [38] (▶ Fig. 9C, D).…”

Section: Imagingmentioning

confidence: 85%

Cross Sectional Imaging of Solitary Lesions of the Neurocranium

Schäfer

Koch

Streitparth

et al. 2017

Fortschr Röntgenstr

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ABSTR AC TBackground Although a wide range of processes along the neurocranium are of a benign nature, there are often difficulties in the differential diagnosis.Method In the review CT/MRI scans of the head were evaluated retrospectively regarding solitary lesions along the neurocranium. The majority of the lesions were histologically proven.Results The purpose of the review is to present typical pathologies of the neurocranium and provide a systematic overview based on 12 entities, their locations, prevalence and radiological characteristics.Conclusion Processes, which primarily originate from the neurocranium have to be differentiated from secondary processes infiltrating the neurocranium. For this important diagnostic feature, MRI is typically essential, while the definitive diagnosis is often made on the basis of the medical history and the typical appearance on computer tomography. Key Points▪ There are often difficulties in the precise differential diagnosis of solitary lesions along the neurocranium. Typical solitary pathologies of the neurocranium based on 12 entities were presented. Both magnetic resonance imaging and computed tomography are often essential for an exact differential diagnosis. Schlussfolgerung Unterschieden werden müssen Prozesse, die primär vom Neurokranium ausgehen, von sekundären Prozessen, die das Neurokranium infiltrieren. Für dieses wichtige diagnostische Merkmal ist die MRT meistens unverzichtbar, während die definitive Diagnose dann unter Berücksichti-gung der Anamnese mit dem typischen Erscheinungsbild in der CT häufig gestellt werden kann.

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Section: Imagingmentioning

confidence: 85%

Cross Sectional Imaging of Solitary Lesions of the Neurocranium

Schäfer

Koch

Streitparth

et al. 2017

Fortschr Röntgenstr

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“…38 The sign is now considered nonspecific and indicative of venous congestion rather than meningeal inflammation. 39 An extension or even infiltration of the pituitary lesion into the basal hypothalamus was originally reported in 5 of 9 patients with AH, 27 but it has been rarely described in subsequent publications. Inflammatory changes of the cavernous portion (C4 segment) of the internal carotid artery have been reported in AH, 40 but their relevance in the differential diagnosis of sellar masses remains to be clarified.…”

Section: Discussionmentioning

confidence: 99%

A Radiologic Score to Distinguish Autoimmune Hypophysitis from Nonsecreting Pituitary Adenoma Preoperatively

Gutenberg¹,

Larsen²,

Lupi³

et al. 2009

AJNR Am J Neuroradiol

145

121

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BACKGROUND AND PURPOSE:Autoimmune hypophysitis (AH) mimics the more common nonsecreting pituitary adenomas and can be diagnosed with certainty only histologically. Approximately 40% of patients with AH are still misdiagnosed as having pituitary macroadenoma and undergo unnecessary surgery. MR imaging is currently the best noninvasive diagnostic tool to differentiate AH from nonsecreting adenomas, though no single radiologic sign is diagnostically accurate. The purpose of this study was to develop a scoring system that summarizes numerous MR imaging signs to increase the probability of diagnosing AH before surgery.

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“…Indeed, distinguishing between tumor and the healthy tissue of the skull base is difficult, even with modern imaging techniques (4). Both CT and MRI are used for the follow-up of meningiomas because of the usefulness of combining the superior soft-tissue imaging afforded by MRI with the geometric accuracy of CT.…”

mentioning

confidence: 99%

PET/CT of Skull Base Meningiomas Using 2-18F-Fluoro-L-Tyrosine: Initial Report

Rutten¹,

Cabay²,

Withofs³

et al. 2007

Journal of Nuclear Medicine

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Precise delineation of the shape of skull base meningiomas is critical for their treatment and follow-up but is often difficult using conventional imaging such as CT and MRI. We report our results with PET/CT and 2-18 F-fluoro-L-tyrosine ( 18 F-TYR), a marker of amino acid transport, as part of the yearly follow-up of irradiated patients. Methods: Eleven patients (mean age, 56.5 y) with skull base meningiomas (n 5 13 lesions) previously irradiated were included. All patients received 300 MBq of 18 F-TYR and were imaged after 30 min of uptake, using a dedicated PET/CT system. The images were first visually examined, and regions of interest (ROI) were then placed over the transaxial PET slice showing the highest uptake. Another ROI was placed over the normal parietal cortex. Tumor-to-cortex activity ratios were obtained by dividing the maximum pixel value in the tumor ROI by the maximum pixel value in the cortex ROI. The PET/CT images were compared with the MR images obtained as part of routine followup. Results: Accumulation of the tracer was higher in all meningiomas than in the surrounding tissue. The tumor-to-cortex activity ratio was 2.53 6 0.35 (range, 1.3-6). Nonneoplastic tissue such as hyperemic cavernous sinus did not take up the radionuclide and was therefore easily distinguished from the meningioma. The 18 F-TYR anomalies completely overlapped with the MR image in 54% of the tumors, extended beyond the MRI lesion in 38% of the tumors, and were smaller in 8% of the tumors. Conclusion: Meningiomas of the skull base are clearly visualized using 18 F-TYR PET/CT, even after irradiation. In addition to MRI, 18 F-TYR PET/CT images may contribute to the evaluation, delineation, and follow-up of these tumors.

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The dural tail sign—beyond meningioma

Cited by 118 publications

References 35 publications

Cross Sectional Imaging of Solitary Lesions of the Neurocranium

Cross Sectional Imaging of Solitary Lesions of the Neurocranium

A Radiologic Score to Distinguish Autoimmune Hypophysitis from Nonsecreting Pituitary Adenoma Preoperatively

PET/CT of Skull Base Meningiomas Using 2-18F-Fluoro-L-Tyrosine: Initial Report

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