• JacksonEric MEMDepartment of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore , Maryland , USA., Sarah Jernigan, Jeffrey S Raskin, Laurie L Ackerman, Libby Kosnik Infinger, Cormac O Maher, Toba Niazi, Jogi V Pattisapu, Rabia Qaiser, Carolyn Quinsey, Brandon G Rocque, Howard Silberstein, Shobhan Vachhrajani, and David F Bauer.
• Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore , Maryland , USA.
• Neurosurgery. 2023 Oct 1; 93 (4): 727730727-730.

BackgroundChiari I malformation (CIM) is characterized by descent of the cerebellar tonsils through the foramen magnum, potentially causing symptoms from compression or obstruction of the flow of cerebrospinal fluid. Diagnosis and treatment of CIM is varied, and guidelines produced through systematic review may be helpful for clinicians.ObjectiveTo perform a systematic review of the medical literature to answer specific questions on the diagnosis and treatment of CIM.MethodsPubMed and Embase were queried between 1946 and January 23, 2021, using the search strategies provided in Appendix I of the full guidelines.ResultsThe literature search yielded 430 abstracts, of which 79 were selected for full-text review, 44 were then rejected for not meeting the inclusion criteria or for being off-topic, and 35 were included in this systematic review.ConclusionFour Grade C recommendations were made based on Class III evidence, and 1 question had insufficient evidence. The full guidelines can be seen online at https://www.cns.org/guidelines/browse-guidelines-detail/2-symptoms .Copyright © Congress of Neurological Surgeons 2023. All rights reserved.

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