Ring-shaped lateral ventricular nodules: a “leave me alone” lesion

Júnior, Marcos Rosa; Vieira, Vera Lúcia Ferreira

doi:10.1590/0004-282x20180040

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…Cerebrospinal fluid flow may also present as nodullary figures within the ventricles, requiring differential diagnosis with tuberous sclerosis and ring-shaped lateral ventricular nodes 9 10 ( Fig. 6 ).…”

Section: Resultsmentioning

confidence: 99%

Artifacts in MRI: Villain or Hero? Using Artifacts for Diagnosing Central Nervous System Diseases

Morais

Peruzini

Júnior

2021

Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery

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An artifact is a feature present in an image which is not part of the original structure. It can occur as a consequence of several factors. It may be mistaken for pathologic conditions, leading to adverse consequences for the patients. The aim of the present study is to present a selection of the main artifacts described in brain and spinal magnetic resonance images to improve the ability of the physicians to recognize them and to reduce their interference on the final interpretation of a scan. The authors searched the scientific community for artifacts in magnetic resonance imaging (MRI), which were selected to focus on central nervous system (CNS) findings. With the Picture Archiving and Communication System (PACS) database from the center where this study was conducted, the authors designated brain and spine MRI scans with conspicuous artifacts to compose the present study. The artifacts were then classified as those that contribute to the diagnosis and those that must be distinguished from pathologic lesions. Considering the novel classification proposed by the present study, physicians might be stimulated to reevaluate their opinions regarding artifacts, perhaps considering them helpful to evaluate certain conditions even if they cannot be fully corrected, as shown by this distinct approach to artifacts with specific findings concerning differential diagnosis of CNS conditions.

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Section: Resultsmentioning

confidence: 99%

Artifacts in MRI: Villain or Hero? Using Artifacts for Diagnosing Central Nervous System Diseases

Morais

Peruzini

Júnior

2021

Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery

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Is This Truly A “Leave-Me-Alone” Lesion? An Unusual Case of Multiple Ring-shaped Lateral Ventricular Nodules

et al. 2020

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Halka Şekilli Lateral Ventrikül Nodüllerinin Konvansiyonel ve Diffüzyon MR Görüntüleme Özellikleri

KARAMAN,

KORKMAZER,

ÖZKAN

et al. 2024

Konuralp Tıp Dergisi

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Objective: The aim of this study is to evaluate the conventional and diffusion MRI findings of ring-shaped lateral ventricular nodules (RSLVN) along with clinical features. Methods: MR images of all patients who underwent contrast-enhanced brain MRI between 2019 and 2023 were retrospectively evaluated. The number, shape, maximal diameter, and signal intensity of RSLVNs on T1-weighted (T1W), T2-weighted (T2W), fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted imaging (DWI), and contrast-enhancement status were evaluated. Apparent diffusion coefficient (ADC) values and normalized ADC ratios of nodules were also determined. If follow-up MRIs were performed, morphological changes of RSLVNs were evaluated. Results: RSLVN was observed in fifteen (0.51%) of 2920 patients. Multiple RSLVNs were observed in five patients and therefore a total of 23 RSLVNs were identified in fifteen patients. Nodules were located on the roof of the lateral ventricle in eight nodules (34.8%), in the frontal horn in twelve nodules (52.2%), and in the septum pellucidum in three. 6 of 23 RSLVNs (26.1%) were larger than 1 cm. All RSLVNs were isointense on T1W and T2W, while hyperintense on FLAIR. On DWI, 20 of 23 RSLVNs had isointense signal and the remaining 3 lesions were hyperintense. The mean ADC value and nADC ratio were 1.42 ± 0.29 x 10-3mm2 and 1.87 ± 0.31, respectively. Conclusion: RSLVNs may be more frequent than previously reported. Their uniform MRI appearance and typical localizations are distinctive, and they can reach relatively large sizes. Morphological stability during follow-up and the ADC values of these lesions suggest a possible benign nature.

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Ring-shaped lateral ventricular nodules: a “leave me alone” lesion

Abstract: Figure. MRI, axial balanced, a three-dimensional steady-state free precession T2-weighted imaging (A), FLAIR (B) and T1-post gadolinium (C), obtained at the level of the roof of the lateral ventricles show ring-shaped left lateral ventricular nodules (arrows) with no contrast enhancement.

Cited by 5 publications

References 2 publications

Artifacts in MRI: Villain or Hero? Using Artifacts for Diagnosing Central Nervous System Diseases

Artifacts in MRI: Villain or Hero? Using Artifacts for Diagnosing Central Nervous System Diseases

Is This Truly A “Leave-Me-Alone” Lesion? An Unusual Case of Multiple Ring-shaped Lateral Ventricular Nodules

Halka Şekilli Lateral Ventrikül Nodüllerinin Konvansiyonel ve Diffüzyon MR Görüntüleme Özellikleri

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