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Total 256 results found since Jan 2013.

Late vascular complications after cranial radiotherapy: A report of two illustrative cases
We present two cases of late neurological complications after CRT and briefly discuss its diagnosis and their shared pathophysiological aspects. The first case is a patient with cognitive impairment associated to mineralizing microangiopathy ten years after CRT for nasopharyngeal carcinoma and the second one is a woman with Stroke-like Migraine Attacks after Radiation Therapy (SMART) syndrome two years after CRT for anaplastic meningioma. Nowadays, higher survival rates might cause an increase in appearance of late neurological complications after CTR. These reported cases show that late complications can mimic a wide vari...
Source: Cancer Radiotherapie - April 27, 2021 Category: Cancer & Oncology Authors: J Madera A S ánchez-Soblechero P Navarrete Solano U Corro Verde E Marco de Lucas M Pacheco Baldor P J Prada J Pascual Source Type: research

Relationship between 7T MR-angiography features of vascular injury and cognitive decline in young brain tumor patients treated with radiation therapy
ConclusionsArterial volume is reduced with increasing CMB presence and is influenced by the total brain volume exposed to radiation. This work highlights the potential use of vascular-derived metrics as non-invasive markers of treatment-induced injury and cognitive impairment in pediatric brain tumor patients.
Source: Journal of Neuro-Oncology - April 24, 2021 Category: Cancer & Oncology Source Type: research

Stroke-Like Migraine Attacks After Radiation Therapy (SMART) Syndrome: A Comprehensive Review
AbstractPurpose of ReviewSMART syndrome is a delayed complication of cranial irradiation that can be misconstrued as tumor recurrence or some other intracranial neurological disease. Recognition of this clinical syndrome is imperative as it can obviate the need for invasive diagnostic testing and can provide reassurance to both the patient and their loved ones.Recent FindingsSMART syndrome is generally considered a reversible clinical syndrome; however, neurological deficits may become permanent. Pathophysiology of SMART syndrome may involve cerebrovascular autoregulation impairment, neuronal dysfunction leading to trigemi...
Source: Current Pain and Headache Reports - March 24, 2021 Category: Neurology Source Type: research

Atypical imaging findings of presumed stroke-like migraine attacks after radiation therapy syndrome in the brainstem
AbstractThe authors present an atypical case of presumed stroke-like migraine attacks after radiation therapy (SMART) syndrome in the brainstem. A 29-year-old male, who had been treated with resection and subsequent craniospinal radiation for posterior fossa medulloblastoma 21 years before, presented with subacute progressive left hemiparesis evolving over 4 days. Hematological findings, cerebrospinal fluid (CSF), and electroencephalogram (EEG) were unremarkable. Magnetic resonance imaging (MRI) showed a round area of hyperintense FLAIR signal centered within the pons associated with central restricted diffusion, periphera...
Source: Neuroradiology - March 11, 2021 Category: Radiology Source Type: research

Sales of CT and x-ray help Canon 2020 results
Strong sales of CT and x-ray systems helped Canon's medical systems business...Read more on AuntMinnie.comRelated Reading: Canon's wide-bore CT for radiation therapy clears FDA Canon touts wide-bore CT, AI for PET/CT at RSNA 2020 Canon offers guides for ultrasound in COVID-19 patients Canon 1.5T MRI rivals 3T in head-to-head challenge Avicenna, Canon to partner on AI stroke detection
Source: AuntMinnie.com Headlines - January 29, 2021 Category: Radiology Source Type: news

SMART Syndrome Identification and Successful Treatment
We report a 41-year-old male patient admitted to our emergency room with a reduced level of consciousness and global aphasia. One month prior to admission, he started with frequent headache attacks of moderate intensity and paroxysmal behavioral alterations, advancing to confusion, gait instability, language impairment, and somnolence. He had a history of medulloblastoma treated with surgical resection followed by craniospinal irradiation 21 years before symptom onset. After excluding more frequent causes for the patient ’s symptoms along with a suggestive image pattern, we started treatment for SMART syndrome with high-...
Source: Case Reports in Neurology - January 25, 2021 Category: Neurology Source Type: research

Intracranial long-term complications of radiation therapy: an image-based review
ConclusionsWe describe the clinical and imaging features of selected sequelae of intracranial radiation therapy, with a focus on those most relevant to practicing radiologists. Knowledge of these complications and their imaging findings is important, because radiologists play a key role in early detection of these entities.
Source: Neuroradiology - January 4, 2021 Category: Radiology Source Type: research

Outcomes of Combined Antegrade –Retrograde Dilations for Radiation-Induced Esophageal Strictures in Head and Neck Cancer Patients
AbstractThe purpose of this study is to analyze outcomes of combined antegrade –retrograde dilations (CARD). This retrospective study was conducted on 14 patients with a history of head and neck cancer, treated with radiation therapy that was complicated by either complete or near-complete esophageal stenosis. All patients had minimal oral intake and depended on a gastrostom y tube for nutrition. Swallow function before and after CARD was assessed using the Functional Oral Intake Scale, originally developed for stroke patients and applied to head and neck cancer patients. Patients undergoing CARD demonstrated a quantifia...
Source: Dysphagia - January 2, 2021 Category: Speech-Language Pathology Source Type: research

Lacunar stroke as a very late complication of radiotherapy: value of nuclear medicine techniques.
CONCLUSIONS: The reappearance of neurological symptoms years after radiotherapy of a brain neoplasm poses a diagnostic dilemma. Current diagnostic techniques are very accurate but present false positives. The various nuclear medicine techniques, in particular PET-CT 11C-methionine, are a diagnostic aid. With the presentation of this case we intend to draw attention to one of the late complications of radiation therapy and the various differential diagnoses. Diagnostic and therapeutic advances have increased the life expectancy of cancer patients, so these late complications are expected to be more frequent. PMID: 3331...
Source: Revista de Neurologia - December 16, 2020 Category: Neurology Authors: Ortega-Valín F, Jiménez-Bonilla JF, García-Hernández A, Rodríguez-Rodriguez E, Sánchez-Salmón E Tags: Rev Neurol Source Type: research

Vascular events from carotid artery atherosclerosis after radiation therapy for laryngeal and hypopharyngeal cancer: the incidence and risk factors.
Authors: Makita C, Okada S, Kajiura Y, Tanaka O, Asahi Y, Yamada N, Yanagida M, Kumagai M, Murase S, Ito M, Kumano T, Matsuo M Abstract In this retrospective cohort study, we evaluated the incidence of vascular events from carotid artery atherosclerosis after radiotherapy indication for laryngeal and hypopharyngeal cancer. From January 2007 to December 2016, we investigated 111 laryngeal/hypopharyngeal cancer patients who underwent curative radiotherapy and were followed up for ≥1 year (median follow-up duration, 60 months). We evaluated the incidence of vascular events from carotid artery atherosclerosis, define...
Source: Nagoya Journal of Medical Science - December 15, 2020 Category: International Medicine & Public Health Tags: Nagoya J Med Sci Source Type: research

Severe, Fatal Methotrexate-related Neurotoxicity in 2 Adolescent Patients With ALL
Neurotoxicity is a well-documented adverse effect of methotrexate in the treatment of pediatric cancers. The spectrum of symptoms is broad, can include stroke-like episodes and seizures, and classically resolves within days. The majority of patients tolerate subsequent doses without recurrence of symptoms. The population of patients who experience persistent and irreversible neurologic symptoms is poorly described, with the existing literature suggestive of a relationship with radiation therapy. The authors present a case series of 2 patients with pre-B-cell acute lymphoblastic leukemia who developed severe and ultimately ...
Source: Journal of Pediatric Hematology Oncology - October 23, 2020 Category: Hematology Tags: Online Articles: Clinical and Laboratory Observations Source Type: research

Rate of radiation-induced microbleed formation on 7T MRI relates to cognitive impairment in young patients treated with radiation therapy for a brain tumor.
CONCLUSIONS: Treatment with RT during youth is associated with the chronic development of CMBs that evolve with memory impairment over time. PMID: 32966846 [PubMed - as supplied by publisher]
Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - September 19, 2020 Category: Radiology Authors: Morrison MA, Mueller S, Felton E, Jakary A, Stoller S, Avadiappan S, Yuan J, Molinaro AM, Braunstein S, Banerjee A, Hess CP, Lupo JM Tags: Radiother Oncol Source Type: research

Classical Clinical and Neuroimaging Findings in SMART (Stroke-Like Migraine Attacks after Radiation Therapy) Syndrome
Eur Neurol
Source: European Neurology - August 31, 2020 Category: Neurology Source Type: research

Potentially Reversible and Recognizable Acute Encephalopathic Syndromes: Disease Categorization and MRI Appearances ADULT BRAIN
SUMMARY: "Encephalopathy" is a vague term that encompasses varying definitions, often with a nonspecific clinical presentation and numerous possible pathophysiologic causes. Hence, MR imaging plays a crucial role in the early diagnosis and treatment by identifying imaging patterns when there is limited clinical history in such patients with acute encephalopathy. The aim of this review was to aid in remembrance of etiologies of potentially reversible acute encephalopathic syndromes on MR imaging. The differential includes vascular (reversible cerebral vasoconstriction syndrome, transient global amnesia, disseminated intrava...
Source: American Journal of Neuroradiology - August 11, 2020 Category: Radiology Authors: Koksel, Y., McKinney, A. M. Tags: ADULT BRAIN Source Type: research