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Contribution of nuclear medicine to the diagnosis and management of primary brain tumours
Rev Neurol (Paris). 2023 Mar 16:S0035-3787(23)00874-3. doi: 10.1016/j.neurol.2023.03.002. Online ahead of print.ABSTRACTPositron emission tomography (PET) is a powerful tool that can help physicians manage primary brain tumours at diagnosis and follow-up. In this context, PET imaging is used with three main types of radiotracers: 18F-FDG, amino acid radiotracers, and 68Ga conjugated to somatostatin receptor ligands (SSTRs). At initial diagnosis, 18F-FDG helps to characterize primary central nervous system (PCNS) lymphomas and high-grade gliomas, amino acid radiotracers are indicated for gliomas, and SSTR PET ligands are in...
Source: Revue Neurologique - March 18, 2023 Category: Neurology Authors: T Horowitz E Tabouret T Graillon B Salgues O Chinot A Verger E Guedj Source Type: research

Delayed radiation-induced stroke mimics recurrent tumor in and adolescent with remote history of low-grade brainstem glioma
A 13-year-old female was diagnosed with a ponto- medullary brainstem glioma and following unsuccessful treatment with chemotherapy, underwent focal photon intensity modulated radiation therapy that resulted in a favorable response. Ten years later, the patient presented with acute onset left-sided hemiplegia and headaches. Magnetic resonance imaging (MRI) at presentation showed a large contrast- enhancing lesion with surrounding vasogenic edema and reduced diffusivity on diffusion- weighted imaging most concerning for a high grade secondary malignancy (Figure 1).
Source: Pediatric Neurology - June 4, 2019 Category: Neurology Authors: Lianne Q. Chau, Michael L. Levy, John Ross Crawford Tags: Short Communication Source Type: research

Delayed Radiation-Induced Stroke Mimics Recurrent Tumor in an Adolescent With Remote History of Low-Grade Brainstem Glioma
This 13-year-old girl was diagnosed with a ponto-medullary brainstem glioma, and following unsuccessful treatment with chemotherapy, she underwent focal photon intensity-modulated radiation therapy that resulted in a favorable response. Ten years later, she presented with acute left hemiplegia and headaches. Magnetic resonance imaging (MRI) at presentation showed a large contrast-enhancing lesion with surrounding vasogenic edema and reduced diffusivity on diffusion-weighted imaging, most concerning for a high-grade secondary malignancy (Fig 1).
Source: Pediatric Neurology - June 4, 2019 Category: Neurology Authors: Lianne Q. Chau, Michael L. Levy, John R. Crawford Tags: Clinical Letter Source Type: research

Targeting pericytes for therapeutic approaches to neurological disorders
AbstractMany  central nervous system diseases currently lack effective treatment and are often associated with defects in microvascular function, including a failure to match the energy supplied by the blood to the energy used on neuronal computation, or a breakdown of the blood–brain barrier. Pericytes, an u nder-studied cell type located on capillaries, are of crucial importance in regulating diverse microvascular functions, such as angiogenesis, the blood–brain barrier, capillary blood flow and the movement of immune cells into the brain. They also form part of the “glial” scar isolating damaged parts of the CN...
Source: Acta Neuropathologica - October 1, 2018 Category: Neurology Source Type: research

Stroke-like migraine attacks in long term survivors of high grade glioma. (P1.174)
Conclusions:Stroke-like migraine attacks are difficult to treat and the pathophysiology is unknown. With more sophisticated imaging techniques, a better understanding of this phenomenon will aid in the treatment and prophylaxis of the syndrome with a goal of improving quality of life for this small but slowly growing population.Disclosure: Dr. New has nothing to disclose. Dr. Mirza has nothing to disclose.
Source: Neurology - April 17, 2017 Category: Neurology Authors: New, P., Mirza, H. Tags: Neuro-oncology: Gliomas I Source Type: research

Central positional vertigo (P6.045)
Conclusions:Migraine may be a benign cause of CPV, however, a broad spectrum of diseases including tumors, stroke, infections and neurodegenerative disorders may be responsible. Earlier detection of posterior fossa lesions is critical to improve the outcome. Moreover, central positional vertigo/nystagmus could be the very first manifestation of the underlying disease.Central positional nystagmus is often an unrecognized entity. In this series, 3 patients had isolated positional DBN and truncal ataxia as the initial neurologic abnormality, one of them with a CNS neoplasm. Diagnostic clues for central localization are: prese...
Source: Neurology - April 17, 2017 Category: Neurology Authors: De Schutter, D., Kattah, J. Tags: Neuro-opthalmology/Neuro-otology II Source Type: research

SMART syndrome: Classic transient symptoms leading to an unusual unfavorable outcome.
CONCLUSION: SMART syndrome may progress from a benign reversible form to a severe and eventually irreversible form. This severe course may also be confused with tumor progression, and lead to permanent disability and inadequate antitumor treatment. Clinicians should be aware of this latter atypical presentation. PMID: 27919464 [PubMed - as supplied by publisher]
Source: Revue Neurologique - December 8, 2016 Category: Neurology Tags: Rev Neurol (Paris) Source Type: research

Pseudotumoral presentation of cerebral amyloid angiopathy-related inflammation
Conclusion: The identification of one or several nonenhancing space-occupying lesions, especially in elderly patients presenting with cognitive impairment, should raise suspicion for the pseudotumoral presentation of CAA-I and lead to T2*-GRE sequences. Perfusion MRI and MRS appear to be useful techniques for the differential diagnosis of this entity.
Source: Neurology - March 7, 2016 Category: Neurology Authors: Ronsin, S., Deiana, G., Geraldo, A. F., Durand-Dubief, F., Thomas-Maisonneuve, L., Formaglio, M., Desestret, V., Meyronet, D., Nighoghossian, N., Berthezene, Y., Honnorat, J., Ducray, F. Tags: MRI, MRS, Other cerebrovascular disease/ Stroke, Primary brain tumor ARTICLE Source Type: research

Mitochondrial Encephalopathy with Lactic Acidosis and Stroke (MELAS) presenting as an apparent neoplastic process (P5.015)
CONCLUSION: MELAS can mimic more common disorders. The slow onset of her symptoms and the MRI's appearance led to suspicion for neoplasm. This is the first report to our knowledge where MELAS has presented as such. Documentation of this and other unusual presentations of mitochondrial disease is crucial to appropriate diagnosis of the condition.Disclosure: Dr. Rothstein has nothing to disclose. Dr. Haq has nothing to disclose.
Source: Neurology - April 8, 2015 Category: Neurology Authors: Rothstein, A., Haq, I. Tags: Aging, Dementia, Cognitive, and Behavioral Neurology ePosters Source Type: research