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Congress: ECR25
Poster Number: C-28579
Type: Poster: EPOS Radiologist (educational)
DOI: 10.26044/ecr2025/C-28579
Authorblock: A. Patchkoria, E. Ghibradze; Tbilisi/GE
Disclosures:
Ana Patchkoria: Nothing to disclose
Eliso Ghibradze: Nothing to disclose
Keywords: CNS, Neuroradiology brain, CT, MR, Diagnostic procedure, Cerebrospinal fluid, Cysts, Neoplasia
Learning objectives To recognize a variety of neoplasms that may arise in the ventricular system. To differentiate intraventricular lesions based on location within the ventricular system, enhancement pattern, presence of cystic component, age and etc.
Read more Background The ventricles are surrounded by a layer of ependymal and  subependymal plate formed by glial cells. Such layers give origin to ependymomas, subependymomas and subependymal giant cell astrocytomas.  The septum pellucidum is also lined by glial cells and residual neuronal precursor cells, and it gives rise to the central neurocytoma. The choroid plexus is the most vascularized portion of the ventricular system and produces the cerebrospinal fluid. Primary neoplasias of this tissue are highly vascularized and are commonly associated with...
Read more Findings and procedure details Ependymomas (WHO grade 2) are common slow-growing tumor arising from the differentiated ependymal cells lining the ventricle and central canal. They constitute around 2%-9% of pediatric brain tumors and almost one-third of all brain tumors in children younger than 3 years. They are the third most common pediatric brain tumors, after astrocytoma and medulloblastoma. Fourth ventricle is the most common location. Posterior fossa ependymoma has been called the “toothpaste” or “plastic tumor” for its propensity to fill the fourth ventricle...
Read more Conclusion Knowing imaging characteristics, lesion location, and patient demographics can considerably narrow down the differential diagnosis.
Read more References Osborn, A.G. (2020) Essentials of Osborn’s brain: A fundamental guide for residents and fellows. Philadelphia, PA: Elsevier. Sun, E.X., Shi, J. and Mandell, J. (2021) Core radiology: A visual approach to diagnostic imaging. Cambridge etc.: Cambridge University Press. 2005–2025 Radiopaedia.org Castro FD, Reis F, Guerra JGG. Intraventricular mass lesions at magnetic resonance imaging: iconographic essay - part 1. Radiol Bras. 2014;47(3):176–181. A Kaywan Aftahy, Melanie Barz, Philipp Krauss, Friederike Liesche, Benedikt Wiestler, Stephanie E Combs Christoph Straube , Bernhard Meyer, Jens Gempt. Intraventricular neuroepithelial tumors: surgical...
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