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Congress: ECR24
Poster Number: C-16006
Type: EPOS Radiographer (educational)
Authorblock: A. W. L. Chong, H. Chi Long; Singapore/SG
Disclosures:
Aaron Wei Loong Chong: Nothing to disclose
Ho Chi Long: Nothing to disclose
Keywords: Anatomy, CNS, CT, MR, Education, Instrumentation, Intraoperative, Education and training
Learning objectives Review the embryological origin of intraventricular tumors (IVTs). Describe the demographics and common locations of IVTs. Recognize the key imaging features of IVTs. Discuss the common surgical approaches to each IVT.
Read more Background Intraventricular tumours (IVTs) are rare and comprise of 0.8-1.6% of all intracranial neoplasms.They originate from the ependymal or subependymal, septum pellucidum, choroid plexus, and the supporting arachnoid tissue (Figure 1).We report a series of IVTs treated in a tertiary teaching hospital in Singapore. The imaging features of IVTs are correlated with the surgical approaches to the ventricular system. Here, we comprehensively outline the imaging characteristics, pathology, and surgical approaches for various primary IVTs.
Read more Findings and procedure details Ependymoma (Figure 2)Demographics: Both children and adults.Imaging: Heterogeneous signal intensities and enhancement with cystic/necrotic areas.Pathology: Arises from ependymal lining of the ventricles, WHO grade II or III.Most common location: Posterior fossa.Surgical Approach: Suboccipital craniotomy and careful tumor resection sparing the cranial nerves. Subependymoma (Figure 3)Demographics: Most commonly occur between the fourth and sixth decades of life with male:female ratio of 2.3:1.Imaging: Well-defined with calcification, T1 iso- and T2 hyper-intense, hypoenhancing lesion.Pathology: Slow-growing, WHO grade I tumor arising from subependymal cells.Most common...
Read more Conclusion Knowledge of the common location of tumors within the ventricular system, together with the key imaging characteristics and age of presentation, can significantly narrow the differential diagnosis of these primary ventricular tumors. Advanced imaging plays a crucial role in preoperative treatment planning, guides surgical resection and postoperative surveillance. Appropriate surgical approaches and neuroendoscopy play a key role in tumor resection. Gross total resection (GTR) is the mainstay treatment.
Read more References Chong AW, McAdory LE, Low DCY, Lim EJ, Leong NWL, Ho CL. Primary intraventricular tumors - Imaging characteristics, post-treatment changes and relapses. Clin Imaging. 2022 Feb;82:38-52. doi: 10.1016/j.clinimag.2021.10.008. Agarwal A, Kanekar S. Intraventricular Tumors. Semin Ultrasound, CT MRI 2016;37:150–8. https://doi.org/10.1053/j.sult.2015.12.003. Smith AB, Smirniotopoulos JG, Horkanyne-Szakaly I. From the Radiologic Pathology Archives: Intraventricular Neoplasms: Radiologic-Pathologic Correlation. RadioGraphics 2013;33:21–43. https://doi.org/10.1148/rg.331125192. Koeller KK, Sandberg GD. From the archives of the AFIP: Cerebral intraventricular neoplasms: Radiologic-pathologic correlation. Radiographics 2002;22:1473–505. https://doi.org/10.1148/rg.226025118. Varma A, Giraldi D, Mills S, Brodbelt AR,...
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