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.

scholarly journals Intradural Extramedullary Spinal Sarcoidosis Mimicking Meningioma

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Sho Ishiwata ◽  
Yoichi Iizuka ◽  
Tokue Mieda ◽  
Junko Hirato ◽  
Hiromi Koshi ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Rare Entity ◽  
Resonance Imaging ◽  
Spinal Cord Tumors ◽  
Total Resection ◽  
Case Presentation ◽  
Dural Tail Sign ◽  
Dural Tail ◽  
Intradural Extramedullary ◽  
Magnetic Resonance Imaging Mri

Background. Spinal sarcoidosis is a rare subgroup of neurosarcoidosis. Although most sarcoid lesions develop in the intramedullary compartment, intradural extramedullary (IDEM) spinal sarcoidosis is an extremely rare entity. Case Presentation. We herein report a case of IDEM spinal sarcoidosis mimicking a meningioma. A 32-year-old man presented to the hospital with clumsy hands and was unable to walk without assistance. Magnetic resonance imaging (MRI) of the cervical spine revealed a dural tail sign that is common in meningiomas. The patient underwent gross total resection. The pathological findings consisted with a sarcoid leision of the spinal cord. The patient’s myelopathy recovered after surgery. Conclusions. Physicians should be alert for the possibility of IDEM sarcoidosis mimicking a meningioma in the differential diagnosis of IDEM spinal cord tumors.

scholarly journals Primary Extra-axial Glioblastoma: Case Report and Literature Review

2021 ◽  
Author(s):  
Baraa Dabboucy ◽  
Philippe Younes ◽  
Abdallah Rahbani ◽  
Elie Fahed ◽  
Gérard Abadjian
Keyword(s):  
Primary Brain Tumor ◽  
Tumor Type ◽  
Resonance Imaging ◽  
Diagnostic Dilemma ◽  
Dural Tail Sign ◽  
Healthy Female ◽  
Axial Mass ◽  
Dural Tail ◽  
Magnetic Resonance Imaging Mri

AbstractGlioblastoma multiforme (GBM) is the most frequent and most aggressive primary brain tumor in adults, mainly located in the cerebral hemispheres. In the literature, few cases of primary GBM have been reported to have radiographic and intraoperative features of extra-axial lesions, leading to a diagnostic dilemma. Despite the advances in imaging modalities, the diagnosis of GBM can be challenging, and it is mainly based on the histopathologic confirmation of the excised tumor. We describe the case of a 76-year-old previously healthy female patient who presented to our hospital due to speech disturbances and cognitive impairment. The diagnosis of the tumor type on magnetic resonance imaging (MRI) was difficult, as the findings were suggestive of a malignant meningioma due to the heterogeneous enhancement of a dural-based mass with a dural tail sign. Moreover, the intraoperative findings revealed an extra-axial mass attached to the dura. A histological examination confirmed the diagnosis of glioblastoma with arachnoid infiltration. The patient underwent adjuvant radiotherapy and concomitant temozolomide treatment, she had clinical improvement postoperatively, and was stable during the six months of follow-up. Glioblastoma should be considered in the differential diagnosis of primary extra-axial mass with atypical and malignant features, especially in elderly patients.

scholarly journals IMAGING DIAGNOSIS-MAGNETIC RESONANCE IMAGING OF DIFFUSE LEPTOMENINGEAL OLIGODENDROGLIOMATOSIS IN A DOG WITH “DURAL TAIL SIGN”

2016 ◽  
Vol 59 (1) ◽  
pp. E1-E6 ◽  
Author(s):  
Monika Anna Lobacz ◽  
Fabienne Serra ◽  
Gawain Hammond ◽  
Anna Oevermann ◽  
Allison C. Haley
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Imaging Diagnosis ◽  
Dural Tail Sign ◽  
Dural Tail

scholarly journals Posterior reversible encephalopathy syndrome mimicking cerebral metastasis: contraindication for biopsy

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Dukagjin Morina ◽  
Georgios Ntoulias ◽  
Homajoun Maslehaty ◽  
Martin Scholz ◽  
Athanasios K. Petridis
Keyword(s):  
Posterior Reversible Encephalopathy Syndrome ◽  
Resonance Imaging ◽  
Open Biopsy ◽  
Posterior Reversible Encephalopathy ◽  
Typical Appearance ◽  
Magnetic Resonance Imaging Mri ◽  
Immunosupressive Therapy ◽  
Reversible Encephalopathy ◽  
Radiologic Features

The posterior reversible encephalopathy syndrome (PRES) is a well described entity of white matter pathology. PRES is triggered by numerous different factors such as acute elevated arterial hypertension, immunosupressive therapy, chemotherapy, etc. The case of a 67-year old woman is presented. The patient was treated for breast cancer 10 months ago and because of acute disorientation a magnetic resonance imaging (MRI) was performed. In the MRI biparieto-occipital hyperintense lesions were seen. Brain metastases were suspected. After chemothe - rapy and hypertonia and the typical appearance of the lesions in the MRI, PRES was also suspected. Before initializing the surgery for an open biopsy a follow-up MRI had been performed (2 weeks after initial MRI). In follow-up MRI the lesions disappeared completely proving the diagnosis of PRES. PRES can be misdiagnosed as a tumour and surgery could be mistakenly performed. It’s important to keep the differential diagnosis of PRES in mind when radiologic features of the syndrome are present.

Preoperative Differentiation between Meningioma of the Cerebellopontine Angle and Acoustic Neuroma Using MRI

1993 ◽  
Vol 109 (1) ◽  
pp. 88-95 ◽  
Author(s):  
Anil K. Lalwani ◽  
Robert K. Jackler
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
San Francisco ◽  
Acoustic Neuroma ◽  
Cerebellopontine Angle ◽  
Internal Auditory Canal ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Dural Tail ◽  
Magnetic Resonance Imaging Mri

Preoperative differentiation between acoustic neuroma (AN) and meningioma of the cerebellopontine angle (CPA) is important in selection of the surgical approach, successful tumor removal, and preservation of hearing and facial nerve. We retrospectively reviewed the magnetic resonance imaging (MRI) findings associated with 30 meningiomas involving the CPA (MCPA) encountered between 1987 to 1991 at the University of California, San Francisco. Magnetic resonance imaging was critical in differentiating meningioma from AN in the CPA. Typical findings on MRI associated with MCPA, differentiating them from ANs, Include: Meningiomas are sessile, possessing a broad base against the petrous face, whereas ANs are globular; they are often extrinsic and eccentric to the internal auditory canal (IAC); when involving the IAC, they usually do not erode the IAC; MCPAs demonstrate hyperostosis of the subjacent bone and possess intratumoral calcification; they involve adjacent intracranial spaces and structures; and meningiomas are characterized by a distinctive dural “tail” extending away from the tumor surface. While any one finding may not be diagnostic by itself, taken together the constellation of these findings is strongly Indicative of meningioma. In our experience, MRI with gadolinium enhancement was able to distinguish MCPA from AN in nearly every case.

scholarly journals Meningioma with ring enhancement on MRI: a rare case report

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Miao Wang ◽  
Zhongke Wang ◽  
Peng Ren ◽  
Xiaoqing Zhang ◽  
Shiyong Liu
Keyword(s):  
Rare Case ◽  
World Health ◽  
Cystic Degeneration ◽  
Resonance Imaging ◽  
Contrast Administration ◽  
Case Presentation ◽  
Rare Case Report ◽  
Dural Tail ◽  
Magnetic Resonance Imaging Mri ◽  
Health Organization

Abstract Background Meningiomas typically manifest on magnetic resonance imaging (MRI) as iso- to hypointense on T1-weighted imaging and iso- to hyperintense on T2-weighted imaging. After contrast administration, they usually homogeneously enhance and exhibit a visible dural tail. Meningiomas with atypical findings may be misdiagnosed. Case presentation We report a 50-year-old female patient with a pathologically diagnosed fibrous meningioma (World Health Organization grade I) that exhibited ring enhancement on MRI. Conclusions Meningiomas may rarely present with ring enhancement on MRI. The natural history and mechanisms of cystic degeneration and enhancement in the various types of meningioma require further study.

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 IgG4-Related Disease With Tuberculosis: A Case Report and Retrospective Review of Patients in a Single Center

2021 ◽  
Vol 12 ◽  
Author(s):  
Pingying Qing ◽  
Chenyang Lu ◽  
Zhihui Liu ◽  
Xiuzhen Wen ◽  
Bo Chen ◽  
...  
Keyword(s):  
Physical Examination ◽  
Laboratory Data ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Dural Tail Sign ◽  
Dural Tail ◽  
Release Assay ◽  
Ifn Γ ◽  
Magnetic Resonance Imaging Mri ◽  
Latent Tb Infection

BackgroundIgG4-related disease (IgG4-RD) is a recently recognized systemic fibro-inflammatory disease of unknown cause involving many organs including pancreas, salivary glands, and lymph nodes. Chronic tuberculosis (TB) infection has been reported in IgG4-RD, but the prevalence of TB infection has not been evaluated in IgG4-RD.MethodsCharacterization of a patient with IgG4-RD by physical examination, laboratory tests, magnetic resonance imaging (MRI) and histological examination. TB infection was evaluated by medical history, radiological examinations, sputum examinations, tubercular skin test (TST) and interferon gamma (IFN-γ) release assay test (IGRA). Medical records of IgG4-RD patients were reviewed in our institute from February 2015 to September 2020 to explore the prevalence of TB infection in IgG4-RD.ResultsWe described a 40-year-old Chinese man presented with headache and diplopia. Physical examination revealed bitemporal hemianopsia and limited abduction of both eyes. MRI revealed uniformly enhancing mass overlying clivus with dural tail sign. Laboratory data revealed elevation of IgG4 (1.9g/L), and TB-IGRA demonstrated significantly elevated IFN-γ (414.21 pg/ml). The clivus lesion was subtotally removed and IgG4 was strongly positive on immunohistochemical staining. The diagnosis of IgG4-RD was established, and the patient received treatment of corticosteroids, methotrexate, and cyclophosphamide with isoniazid prophylaxis. Consequently, the mass shrank remarkably within 3 months. A similar concurrence of TB disease or latent TB infection (LTBI) and IgG4-RD was present in 17/47 (36.2%) patients in our institute.ConclusionHigh frequency of TB/LTBI presented in patients with IgG4-RD. Patients with IgG4-RD and LTBI should be closely monitored for resurgence of TB. Whether TB represents a risk for IgG4-RD should be further investigated in prospective cohort.

scholarly journals Magnetic resonance “flip-flop” in idiopathic intracranial hypertension

2011 ◽  
Vol 02 (01) ◽  
pp. 084-086 ◽  
Author(s):  
Uttam George ◽  
Geetika Bansal ◽  
Jeyaraj Pandian
Keyword(s):  
Magnetic Resonance ◽  
Intracranial Hypertension ◽  
Idiopathic Intracranial Hypertension ◽  
Resonance Imaging ◽  
Flip Flop ◽  
Csf Pressure ◽  
Intracranial Lesions ◽  
Magnetic Resonance Imaging Mri

ABSTRACTIdiopathic intracranial hypertension (IIH) is a headache syndrome with raised CSF pressure in the absence of an intracranial mass lesion. Though earlier confined to excluding intracranial lesions, magnetic resonance imaging (MRI) in recent years has been shown to identify intracranial changes from prolonged raised CSF pressure, suggestive of IIH. We present the MRI and TOF (time-of-flight) venography findings involving the orbit, sella tursica and cerebral venous structures in a 45-year-old lady with IIH and illustrate their reversibility (“flip-fl op”) following CSF drainage. Our case highlights the role of imaging in evaluation and follow-up of patients with IIH, without the need for repeated lumbar punctures to monitor pressures.

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