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Leptomeningeal carcinomatosis (LC) is found in around 4% of patients with non-small cell lung cancer (NSCLC). The most common radiological finding of LC is diffuse leptomeningeal enhancement on contrast-enhanced brain magnetic resonance imaging (MRI). Herein, we report a novel brain MRI finding-non-enhanced, band-like, symmetric restricted diffusion along the anterior surface of the brainstem-of LC in four patients with NSCLC. We also identified three additional cases with similar MRI findings in a literature review. We hypothesized that the restricted diffusion along the anterior brainstem was caused by malignant cells concentrating in the cistern around the brainstem and infiltrating into the circumferential perforating arteries along the anterior brainstem surface, which then resulted in microinfarctions.
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http://dx.doi.org/10.3389/fneur.2017.00579 | DOI Listing |
Psychiatry Res Neuroimaging
August 2025
Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany.
The neural correlates of treatment-resistant depression (TRD) are not fully elucidated. Brainstem functional connectivity (FC) in TRD has rarely been investigated, despite the assumed role of several brainstem nuclei in depression. 23 patients and 23 sex- and age-matched healthy controls underwent resting-state functional MRI.
View Article and Find Full Text PDFEur Arch Otorhinolaryngol
September 2025
Otorhinolaryngology and Skull Base Center, AP-HP, Hospital Lariboisière, Paris, 75010, France.
Purpose: Cocaine-induced midline destructive lesions (CIMDL) represent a rare but severe consequence of intranasal cocaine abuse, occasionally progressing to skull base involvement with life-threatening complications. The aim of this manuscript is to describe an exceptional case of CIMDL with clival destruction and brainstem exposure, and to review current management strategies based on a systematic literature review.
Methods: We report a unique case of a 39-year-old woman with CIMDL extending to the clivus, resulting in encephalocele with basilar artery and brainstem exposure.
J Neurosurg Case Lessons
September 2025
Department of Neurosciences and Reproductive and Odontostomatological Sciences, Division of Neurosurgery, University of Napoli "Federico II," Naples, Italy.
Background: Brainstem cavernous malformations (BSCMs) are rare vascular lesions, most frequently located in the pons. Their surgical management is particularly demanding due to the dense concentration within the brainstem of eloquent neural pathways and nuclei. Among various surgical routes, the endoscopic endonasal transclival approach (EETA) has been established as a valuable option for treating selected ventrally located lesions.
View Article and Find Full Text PDFTransl Psychiatry
August 2025
Department of Neurology, Johns Hopkins University, Baltimore, MD, USA.
The chromosome 15q11.2 locus is deleted in 1.5% of patients with genetic epilepsy and confers a risk for intellectual disability and schizophrenia.
View Article and Find Full Text PDFJ Comp Neurol
September 2025
Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, Florida, USA.
The dorsal midline thalamus (DMT) is composed of the paraventricular (PV) and paratenial (PT) nuclei. While the anatomical and functional properties of PV are well-established, PT has remarkably received very little attention-even though the efferent projections of PV and PT are very similar. Using a combination of retrograde tracing and immunohistochemistry, we examined the anatomical inputs to PT and compared them with those to the anterior and posterior PV and to the anterodorsal nucleus of the thalamus.
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