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Background: Glioependymal cysts (GECs) are rare benign lesions that can be found anywhere along the neuroaxis, with most of the reports denoting supratentorial location. Here, we introduce a rare case of successfully treated glioependymal cysts lying in an uncommon location, namely medulla oblongata., Case Description: A 69-year-old lady presented with progressive unsteadiness and swallowing disturbances, and brain magnetic resonance imaging showed a dorsally located lesion within the medulla oblongata; based on the presentation and radiological features, surgical intervention was deemed mandatory. The suboccipital midline approach was used to perform marsupialization of the cyst with shunting through a syringosubarachnoid shunt to prevent future recurrence, and the patient outcome was improved., Conclusion: Medulla Oblongata's location for glioependymal cysts proposed unique diagnostic and operative challenges that may require highlighting for practicing neurosurgeons., Competing Interests: There are no conflicts of interest., (Copyright: © 2023 Surgical Neurology International.)

Background: Paraclinoid aneurysms (PcAs) are challenging aneurysms due to the complexity of their relation to the surrounding bony and neurovascular structures. Although over the past decade, their management strategy has shifted from transcranial to endovascular approaches; here, we try to revolve around a subcategory to which minimal invasive supraorbital keyhole (SOK) surgery is feasible depending on specific radiological criteria with a literature review., Methods: A group of unruptured PcAs was managed surgically, with a subset that was clipped through the SOK approach. They were selected by preoperative simulation images using 3D computed tomography (CT) angiography (CTA). We also conducted an extensive literature review based on a database available on PubMed and Google Scholar, the yielded cases from the literature review plus our cases were analyzed according to six parameters including their size, location, dome direction, need for clinoidectomy and proximal cervical control, and surgical outcome., Results: From February 2009 to August 2022, 49 cases of unruptured PcAs were managed by clipping, and of these, four cases were clipped by the SOK approach, in addition, four cases were yielded through the literature review. The sizes of the PcAs ranged from 3 to 8 mm. Their location fluctuated from anterior to the superomedial wall and their domes pointed superiorly except for one which points posteriorly. Six of eight cases required anterior clinoidectomy, the outcome was uneventful., Conclusion: A subset of unruptured PcAs are amenable to SOK with criteria such as unruptured small aneurysm (<10 mm) and projected superiorly. These characteristics can be determined preoperatively using CTA., Competing Interests: There are no conflicts of interest., (Copyright: © 2023 Surgical Neurology International.)

Background: Flow diverters are becoming one of the main endovascular procedures used to treat aneurysms. Flow diverter devices (FDDs) have multiple types approved for endovascular procedure use. Although their indications are not well described, they are usually used for large or giant, wide-necked, and recurrent aneurysms. Multiple FDDs can be deployed to treat giant aneurysms to ensure and accelerate aneurysm occlusion and mitigate complications. We report a case of endovascular treatment of an intracranial aneurysm using three silk FDDs complicated by a delayed migration of the stents along the parent artery, along with a literature review of the related cases., Methods: We conducted a PubMed Medline database search by the following combined formula of subjects headings: ((((((intracranial aneurysm[MeSH Terms]) AND (endovascular procedure[MeSH Terms])) OR (endovascular technique[MeSH Terms])) AND (endovascular[Title/Abstract]) AND (Flow diverter[Title/ Abstract])) OR (flow diversion[Title/Abstract])) OR (Pipeline[Title/Abstract])) AND (Multiple[Title/Abstract])., Results: The result was eight cases of endovascular treatment of intracranial aneurysms with multiple FDD. The male-to-female ratio in these cases was 5:3, and there is a wide age range from 22 months to 69 years old. The cases differed in the type and number of FDDs used, yet, they all had similar results with aneurysm occlusion and recovery of the patient with no observed complications., Conclusion: Tandem flow diverter deployment has technical challenges and complications such as complete obstruction can occur. Planning and learning from experience with those new technologies are the typical way to overcome such complications in the future., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 Surgical Neurology International.)

Background: Cerebral arteriovenous malformations (CAVMs) are either clinically silent or symptomatic. The most common presentation in more than half of all CAVMs presenting patients is hemorrhage which is accompanied by long-standing neurological morbidity and mortality. This report presents a case of an atypical large, slow-flow paramedian AVM with a dilated venous varix managed with surgery. The impact of the intraoperative findings on the diagnosis and the operative technique will be discussed., Case Description: In otherwise, healthy 26-year-old male complained of repeated episodes of generalized seizures and loss of consciousness. Brain magnetic resonance imaging (MRI) revealed a right parietal paramedian arteriovenous malformation (AVM) with signs of an old hemorrhagic cavity beneath it. Digital subtraction angiography demonstrated a slow-filling AVM with dilated venous varix drains into the superior sagittal sinus. However, the exact point of drainage cannot be appreciated. The filling of the AVM occurred precisely with the beginning of the venous phase. Intraoperatively, we noticed a whitish spherical mass, thick hemosiderin tissue, and a large cavity below the nidus; then, a complication-free complete microsurgical resection of this high-grade AVM was performed. Postoperatively, the patient suffered two attacks of seizures in the first few hours after the surgery, for which he received antiepileptics. MRI was clear during follow-up, and the patient was seizure-free and neurologically intact., Conclusion: Parietal convexity AVMs are challenging lesions to tackle. However, the chronicity and the slow-filling of the AVM, in this case, can render the surgical pathway more direct and accessible., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 Surgical Neurology International.)

Background: Neuroanatomy is the core basis for neurosurgical excellence. The quantity of accessible neuroanatomy resources has witnessed exponential growth in recent years. Accumulating a list of popular sources and getting them ranked by neurosurgeons was the motivation behind this investigation., Methods: A list of neuroanatomy resources was compiled using Google search wherein multiple sets of variable combinations of keywords were used. A three-section, eleven-item questionnaire was designed by two neurosurgeons and revised by a third independent reviewer. Neurosurgeons from different parts of the world were invited to participate. The participants were asked to rank the neuroanatomy textbook and non-book online source that they would recommend to neurosurgeons and the features that make a textbook appealing to them., Results: A total of 250 neurosurgeons at different levels of training responded to our questionnaire. Overall, "Rhoton's Cranial Anatomy and Surgical Approach: Albert L. Rhoton Jr., Doctor of Medicine" was the most commonly chosen textbook that the neurosurgeons would use to revise neuroanatomy (86.0%; n = 215), recommend for residents (80.8%; n = 202) and recommend for certified surgeons (Continuing Medical Education (59.8%; n = 150), where applicable. "Illustrations" was rated as the most important neuroanatomy textbook quality by 53% ( n = 134). "Rhoton collection" was the most popular online source (65.7%; n = 164.25). Chi-square tests showed no association between years of experience and the textbooks neurosurgeons recommended., Conclusion: Based on our study Rhoton's book and his online collection are the leading neuroanatomy resources, recommended by neurosurgeons for neurosurgeons worldwide. The other selected resources can be implemented as a complementary part of a comprehensive neuroanatomy teaching curriculum. Knowing the relevance of these assets from a neurosurgeon's perspective is valuable in directing future educational plan updates and recommendations., Competing Interests: There are no conflicts of interest., (Copyright: © 2020 Surgical Neurology International.)