Journals / KONURALP TIP DERGİSİ / 2026 / Volume: 16 Issue: 1

Conventional and Diffusion MR Imaging Features of Ring-shaped Lateral Ventricular Nodules

Ahmet Kürşat Karaman(SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, İSTANBUL SÜREYYAPAŞA GÖĞÜS HASTALIKLARI VE GÖĞÜS CERRAHİSİ SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ)0000-0002-4870-0597
Bora Korkmazer(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0001-7015-365X
Enise Yağmur Özkan(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0003-3856-1033
Enes Değer(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0002-0463-2633
Cihan İsler(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0001-8365-3338
Cesur Samancı(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0002-0217-8895
Ahmet Baş(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0001-7881-3157
Rugiyya Ahmadli(AZERBAIJAN MEDICAL UNIVERSITY)0009-0008-4868-1526
Serdar Arslan(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0001-7984-4326
Osman Kızılkılıc(ISTANBUL UNIVERSITY-CERRAHPASA, CERRAHPAŞA SCHOOL OF MEDICINE, CERRAHPAŞA MEDICINE PR.)0000-0002-6620-8934
Pages
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Publication Date
2024-03-14
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Morphological stability during follow-up and the ADC values of these lesions suggest a possible benign nature.

📌 3 Key Takeaways

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Objective & Hypothesis: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.
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Key Findings & Data:Methods: MR images of all patients who underwent contrast-enhanced brain MRI between 2019 and 2023 were retrospectively evaluated.
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Conclusion & Impact:Morphological stability during follow-up and the ADC values of these lesions suggest a possible benign nature.
🔬Design:Research Article
📍Scope:2019 Verileri
⚙️Variables:RSLVN · Neuroimaging · Magnetic resonance imaging

Abstract

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.

Özet

Amaç: Bu çalışmanın amacı halka şekilli lateral ventrikül nodüllerinin (RSLVN) konvansiyonel ve difüzyon MR bulgularını klinik özellikleriyle birlikte değerlendirmektir. Gereç ve Yöntem: 2019-2023 yılları arasında kontrastlı beyin MR çekimi bulunan tüm hastaların MR görüntüleri retrospektif olarak değerlendirildi. T1 ağırlıklı (T1W), T2 ağırlıklı (T2W), FLAIR ve difüzyon ağırlıklı görüntülemede (DAG) RSLVN'lerin sayısı, şekli, maksimum çapı ve sinyal yoğunluğu ve kontrast tutulum durumu değerlendirildi. Nodüllerin görünür difüzyon katsayısı (ADC) değerleri ve normalleştirilmiş ADC oranları da belirlendi. Takip MR'ları yapıldıysa, RSLVN'lerin zaman içerisindeki morfolojik değişiklikleri değerlendirildi. Bulgular: Çalışmaya dahil edilen 2920 hastanın 15'inde (%0,51) RSLVN saptandı. Beş hastada birden fazla RSLVN gözlendi ve dolayısıyla on beş hastada toplam 23 RSLVN tanımlandı. Nodüllerin sekizi (%34,8) lateral ventrikül tavanında, on iki tanesi (%52,2) ön boynuzda, üçü ise septum pellucidum'da yerleşmişti. 23 RSLVN'den 6'sı (%26,1) 1 cm'den büyüktü. Tüm RSLVN'ler T1W ve T2W'de izointens, FLAIR sekansında ise hiperintensti. DAG'de 23 RSLVN'den 20'sinde izointens sinyal vardı, geri kalan 3 lezyon ise hiperintens idi. Ortalama ADC değeri ve nADC oranı sırasıyla 1,42 ± 0,29 x 10-3mm2 ve 1,87 ± 0,31 idi. Sonuç: RSLVN sıklığı daha önce bildirilenden daha sık olabilir. Konvansiyonel MR görünümleri ve tipik lokalizasyonları ayırt edicidir ve nispeten büyük boyutlara ulaşabilirler. Takip sırasındaki morfolojik stabilite ve bu lezyonların ADC değerleri olası benign bir doğaya işaret etmektedir.

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Cite This Article

Karaman, A. K., Korkmazer, B., Değer, E., İsler, C., Samancı, C., Baş, A., Ahmadli, R., Arslan, S., Kızılkılıc, O. (2024). Conventional and Diffusion MR Imaging Features of Ring-shaped Lateral Ventricular Nodules. KONURALP TIP DERGİSİ, Volume: 16 Issue: 1. https://doi.org/10.18521/ktd.1407655

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References (12)

  1. Shimono T, Hosono M, Ashikaga R, Kumano S, Imaoka I, Yagyu Y, et al. Ring-shaped lateral ventricular nodules: an incidental finding on brain magnetic resonance imaging. Neuroradiology. 2009;51(3):145-50.
  2. Nakajima R, Uchino A, Saito N, Nishikawa R. Ring-shaped Lateral Ventricular Nodules Detected with Brain MR Imaging. Magn Reson Med Sci. 2013;12 (2):105-10.
  3. Pontillo G, Lepore G, Bartolini A, Cerase A, Brunetti A, Muccio CF. Is This Truly A “Leave-Me-Alone” Lesion? An Unusual Case of Multiple Ring-shaped Lateral Ventricular Nodules. World Neurosurg. 2020;136:32-6.
  4. Kuya K, Shinohara Y, Yoshioka H, Kuwamoto S, Kurosaki M, Ogawa T. A Case of Intracranial Subependymoma: Histopathological Confirmation of Ring-shaped Lateral Ventricular Nodule. Magn Reson Med Sci. 2018;17(2):105-6.
  5. Romano N, Fiannacca M, Castaldi A. Imaging of ring-shaped lateral ventricular nodules (RSLVNs). Neurol Sci. 2023;44(6):2223-5.
  6. Rosa Júnior M, Vieira VLF. Ring-shaped lateral ventricular nodules: a “leave me alone” lesion. Arq Neuropsiquiatr. 2018;76 (7):494.
  7. Kono K, Inoue Y, Nakayama K, Shakudo M, Morino M, Ohata K, et al. The Role of Diffusion-weighted Imaging in Patients with Brain Tumors. Am J Neuroradiol. 2001;22 (6):1081-8.
  8. Wang Q, Zhang J, Xu X, Chen X, Xu B. Diagnostic performance of apparent diffusion coefficient parameters for glioma grading. J Neurooncol. 2018;139(1):61-8.
  9. Nagar VA, Ye JR, Ng WH, Chan YH, Hui F, Lee CK, et al. Diffusion-Weighted MR Imaging: Diagnosing Atypical or Malignant Meningiomas and Detecting Tumor Dedifferentiation. Am J Neuroradiol. 2008;29(6):1147-52.
  10. Hoeffel C, Boukobza M, Polivka M, Lot, G, Guichard, JP, Lafitte F, et al. MR manifestations of subependymomas. AJNR Am J Neuroradiol. 1995;16(10):2121-9.
  11. Bi Z, Ren X, Zhang J, Jia W. Clinical, radiological, and pathological features in 43 cases of intracranial subependymoma. J Neurosurg. 2015;122(1):49-60.
  12. Nishio S, Morioka T, Mihara F, Fukui M. Subependymoma of the lateral ventricles. Neurosurg Rev. 2000;23(2):98-103.