scholarly journals Dural tail sign adjacent to different intracranial lesions on contrast-enhanced MR images

2011 ◽  
Vol 1 (2) ◽  
pp. 96-102
Author(s):  
Svjetlana Mujagić ◽  
Jasmina Bećirević-Ibrišević ◽  
Vesna Vržuljević-Martić ◽  
Zlatko Ercegović ◽  
Dželil Korkut ◽  
...  
Keyword(s):  
Wegener’S Granulomatosis ◽  
Wegener's Granulomatosis ◽  
Mr Images ◽  
Gadolinium Contrast ◽  
Cross Sectional ◽  
Acoustic Neuromas ◽  
Dural Tail Sign ◽  
Contrast Enhanced ◽  
Intracranial Lesions ◽  
Dural Tail

Introduction: The aim of this study is to determine the prevalence of dural tail sign (DTS) in meningiomas, glioblastomas multiforme, metastasis, pituitary macro-adenomas, acoustic neuromas, medulloblastomas, lymphomas and Wegener’s granulomatosis, and to reveal if DTS is specifi c for meningiomas.Methods: In this retrospective, cross sectional study 96 patients were included with 95 intracranial and 1 extracranial lesions. The study was conducted in the period from January 2008 to May 2010 and the group pattern was made consecutively. The patients underwent surgery and all 96 lesions were examined by histopathology analysis. DTS was analysed on contrast T1- weighted spin echo images after injection of 0.1 mmol/kg gadolinium contrast medium. The presence of this sign was defi ned using Goldsher et al’s criteria.Results: Histopathology results of the 96 lesions revealed the presence of: 35 meningiomas, 25 glioblastomas multiforme, 13 metastasis, 10 pituitary adenomas, 5 acoustic neuromas, 4 medulloblastomas, 3 lymphomasand 1 Wegener’s granulomatosis. On the contrast-enhanced T1 MR images, DTS was noted in 31 (32.3%) lesions, in the following histological samples: meningioma, GBM, adenoma, schwannoma, medulloblastoma and Wegener’s granulomatosis, while in the cases of metastasis and lymphomas DTS was not noted. We found the dural tail sign to have a sensitivity of 68.6% and specifi city of 88.5% in the diagnosis of meningioma.Conclusion: The dural tail is a common but not a pathognomic sign of meningioma on contrast-enhanced T1 MR images. Other intracranial lesions, such as glioblastoma multiforme, pituitary adenoma, schwannoma,medulloblastoma and Wegener’s granulomatosis may also be represented with this sign.

scholarly journals Application of contrast-enhanced T1-weighted MRI-based 3D reconstruction of the dural tail sign in meningioma resection

2016 ◽  
Vol 125 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Binsheng You ◽  
Yanhao Cheng ◽  
Jian Zhang ◽  
Qimin Song ◽  
Chao Dai ◽  
...  
Keyword(s):  
Tumor Cell ◽  
3D Reconstruction ◽  
Cell Invasion ◽  
Tumor Cell Invasion ◽  
Pathological Examination ◽  
Mr Images ◽  
3D Images ◽  
Dural Tail Sign ◽  
Contrast Enhanced ◽  
Dural Tail

OBJECT The goal of this study was to investigate the significance of contrast-enhanced T1-weighted (T1W) MRI-based 3D reconstruction of dural tail sign (DTS) in meningioma resection. METHODS Between May 2013 and August 2014, 18 cases of convexity and parasagittal meningiomas showing DTS on contrast-enhanced T1W MRI were selected. Contrast-enhanced T1W MRI-based 3D reconstruction of DTS was conducted before surgical treatment. The vertical and anteroposterior diameters of DTS on the contrast-enhanced T1W MR images and 3D reconstruction images were measured and compared. Surgical incisions were designed by referring to the 3D reconstruction and MR images, and then the efficiency of the 2 methods was evaluated with assistance of neuronavigation. RESULTS Three-dimensional reconstruction of DTS can reveal its overall picture. In most cases, the DTS around the tumor is uneven, whereas the DTS around the dural vessels presents longer extensions. There was no significant difference (p > 0.05) between the vertical and anteroposterior diameters of DTS measured on the contrast-enhanced T1W MR and 3D reconstruction images. The 3D images of DTS were more intuitive, and the overall picture of DTS could be revealed in 1 image, which made it easier to design the incision than by using the MR images. Meanwhile, assessment showed that the incisions designed using 3D images were more accurate than those designed using MR images (ridit analysis by SAS, F = 7.95; p = 0.008). Pathological examination showed that 34 dural specimens (except 2 specimens from 1 tumor) displayed tumor invasion. The distance of tumor cell invasion was 1.0–21.6 mm (5.4 ± 4.41 mm [mean ± SD]). Tumor cell invasion was not observed at the dural resection margin in all 36 specimens. CONCLUSIONS Contrast-enhanced T1W MRI-based 3D reconstruction can intuitively and accurately reveal the size and shape of DTS, and thus provides guidance for designing meningioma incisions.

scholarly journals A Pilocytic Astrocytoma Mimicking a Clinoidal Meningioma

2014 ◽  
Vol 2014 ◽  
pp. 1-3 ◽  
Author(s):  
Christopher S. Hong ◽  
Norman L. Lehman ◽  
Eric Sauvageau
Keyword(s):  
Pilocytic Astrocytoma ◽  
Optic Tract ◽  
Rare Occurrence ◽  
Resonance Imaging ◽  
Dural Tail Sign ◽  
Pilocytic Astrocytomas ◽  
Intracranial Lesions ◽  
Dural Tail ◽  
Typical Appearance ◽  
Magnetic Resonance Imaging Mri

Pilocytic astrocytomas and meningiomas are benign, primary brain tumors that may involve the optic tract. Classically, the presence of a dural “tail” sign may differentiate a meningioma from other intracranial lesions. In this report, we describe a mass with the typical appearance of a clinoidal meningioma on magnetic resonance imaging (MRI) but postoperatively diagnosed as a pilocytic astrocytoma. This case illustrates the rare occurrence of a pilocytic astrocytoma mimicking a meningioma on MRI.

Lymphomatoid granulomatosis with multiple intracranial lesions

1981 ◽  
Vol 55 (2) ◽  
pp. 293-298 ◽  
Author(s):  
Richard H. Simon ◽  
Micha Abeles ◽  
Neil J. Farber ◽  
Margaret Grunnet ◽  
Thomas G. Brennan
Keyword(s):  
Computerized Tomography ◽  
Wegener’S Granulomatosis ◽  
Wegener's Granulomatosis ◽  
Lymphomatoid Granulomatosis ◽  
Content Type ◽  
Autopsy Findings ◽  
Resistance To Treatment ◽  
Intracranial Lesions ◽  
Tomography Scan ◽  
Fine Print

✓ A case of lymphomatoid granulomatosis with multiple intracranial lesions is reported. Important aspects of this vasculitis are discussed, including its propensity for lymphomatous transformation, its similarity to Wegener's granulomatosis, its predilection for certain sites, and its resistance to treatment. A correlation is described between the computerized tomography scan and the autopsy findings.

scholarly journals MRI-based radiomics to predict lipomatous soft tissue tumors malignancy: a pilot study

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Benjamin Leporq ◽  
Amine Bouhamama ◽  
Frank Pilleul ◽  
Fabrice Lame ◽  
Catherine Bihane ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Predictive Value ◽  
Malignant Tumors ◽  
External Validation ◽  
Soft Tissue Tumors ◽  
Support Vector ◽  
Mr Images ◽  
Gadolinium Contrast ◽  
Contrast Enhanced ◽  
Lipomatous Tumors

Abstract Objectives To develop and validate a MRI-based radiomic method to predict malignancies in lipomatous soft tissue tumors. Methods This retrospective study searched in the database of our pathology department, data from patients with lipomatous soft tissue tumors, with histology and gadolinium-contrast enhanced T1w MR images, obtained from 56 centers with non-uniform protocols. For each tumor, 87 radiomic features were extracted by two independent observers to evaluate the inter-observer reproducibility. A reduction of learning base dimension was performed from reproducibility and relevancy criteria. A model was subsequently prototyped using a linear support vector machine to predict malignant lesions. Results Eighty-one subjects with lipomatous soft tissue tumors including 40 lipomas and 41 atypical lipomatous tumors or well-differentiated liposarcomas with fat-suppressed T1w contrast enhanced MR images available were retrospectively enrolled. Based on a Pearson’s correlation coefficient threshold at 0.8, 55 out of 87 (63.2%) radiomic features were considered reproducible. Further introduction of relevancy finally selected 35 radiomic features to be integrated in the model. To predict malignant tumors, model diagnostic performances were as follow: AUROC = 0.96; sensitivity = 100%; specificity = 90%; positive predictive value = 90.9%; negative predictive value = 100% and overall accuracy = 95.0%. Conclusion This work demonstrates that radiomics allows to predict malignancy in soft tissue lipomatous tumors with routinely used MR acquisition in clinical oncology. These encouraging results need to be further confirmed in an external validation population.

Vestibular schwannoma showing a dural tail on contrastenhanced magnetic resonance images

1997 ◽  
Vol 111 (9) ◽  
pp. 877-879 ◽  
Author(s):  
Yoshihiro Noguchi ◽  
Atsushi Komatsuzaki ◽  
Ichiro Yamada ◽  
Hideji Okuno ◽  
Hidetoshi Haraguchi
Keyword(s):  
Magnetic Resonance ◽  
Histological Examination ◽  
Dura Mater ◽  
Vestibular Schwannoma ◽  
Cerebellopontine Angle ◽  
Magnetic Resonance Images ◽  
Mr Images ◽  
Collagen Fibres ◽  
Contrast Enhanced ◽  
Dural Tail

AbstractThe dural tail on contrast-enhanced magnetic resonance (MR) images, frequently observed in meningiomas, has been used to distinguish between cerebellopontine angle meningiomas and vestibular schwannomas. We report on a 66-year-old female with vestibular schwannoma showing the dural tail on contrast-enhanced MR images. Histological examination revealed that the dural tail corresponded to the thickened dura mater comprising of collagen fibres and scattered hyalinization with no tumoral invasion.

scholarly journals Patterns of presentation and diagnosis of patients with Wegener's granulomatosis: ENT aspects

2006 ◽  
Vol 121 (7) ◽  
pp. 653-658 ◽  
Author(s):  
I A Srouji ◽  
P Andrews ◽  
C Edwards ◽  
V J Lund
Keyword(s):  
Outcome Measures ◽  
Wegener’S Granulomatosis ◽  
Wegener's Granulomatosis ◽  
Cross Sectional Study ◽  
Initial Presentation ◽  
Sectional Study ◽  
Common Occurrence ◽  
Cross Sectional ◽  
Self Help ◽  
Self Help Group

Design: a cross-sectional study.Participants: One hundred and ninety-nine patients with Wegener's granulomatosis belonging to a patient self-help group.Main outcome measures: Mode of initial presentation; diagnosis timescales and delay; rhinologic involvement; and treatment.Results: Sixty-three per cent of patients initially presented with ENT-related symptoms. Ninety-two per cent faced a delay in their diagnosis of more than one month, a pattern which has not improved over the last few decades and which compares unfavourably with North American figures. Rhinologic and otologic symptoms are a common occurrence in up to 85 and 50 per cent of Wegener's granulomatosis patients, respectively, attracting varying degrees of targeted treatment.Conclusions: As sinonasal and other ENT symptoms are so common at the presentation of Wegener's granulomatosis, it is clear that the otolaryngologist has an important role in its diagnosis and treatment. There are long delays in the diagnosis and possible under-treatment of the ENT symptoms of this condition, highlighting the need for greater awareness, particularly in the ENT community.

Contrast-enhanced ultrasound of the abdominal aorta – current status and future perspectives

VASA ◽  
2019 ◽  
Vol 48 (2) ◽  
pp. 115-125 ◽  
Author(s):  
Xin Li ◽  
Daniel Staub ◽  
Vasileios Rafailidis ◽  
Mohammed Al-Natour ◽  
Sanjeeva Kalva ◽  
...  
Keyword(s):  
Real Time ◽  
Vascular Diseases ◽  
Aneurysm Rupture ◽  
Vasa Vasorum ◽  
Current Status ◽  
Contrast Enhanced Ultrasound ◽  
Aortic Diseases ◽  
Cross Sectional ◽  
Vascular Abnormalities ◽  
Contrast Enhanced

Abstract. Ultrasound has been established as an important diagnostic tool in assessing vascular abnormalities. Standard B-mode and Doppler techniques have inherent limitations with regards to detection of slow flow and small vasculature. Contrast-enhanced ultrasound (CEUS) is a complementary tool and is useful in assessing both the macro- and microvascular anatomy of the aorta. CEUS can also provide valuable physiological information in real-time scanning sessions due to the physical and safety profiles of the administered microbubbles. From a macrovascular perspective, CEUS has been used to characterize aortic aneurysm rupture, dissection and endoleaks post-EVAR repair. With regard to microvasculature CEUS enables imaging of adventitial vasa vasorum thereby assessing aortic inflammation processes, such as monitoring treatment response in chronic periaortitis. CEUS may have additional clinical utility since adventitial vasa vasorum has important implications in the pathogenesis of aortic diseases. In recent years, there have been an increasing number of studies comparing CEUS to cross-sectional imaging for aortic applications. For endoleak surveillance CEUS has been shown to be equal or in certain cases superior in comparison to CT angiography. The recent advancement of CEUS software along with the ongoing development of drug-eluting contrast microbubbles has allowed improved targeted detection and real-time ultrasound guided therapy for aortic vasa vasorum inflammation and neovascularization in animal models. Therefore, CEUS is uniquely suited to comprehensively assess and potentially treat aortic vascular diseases in the future.

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