biostudies-literatureUnknown2Roa Montes de Oca JC•OGM surgery is much more complex than a simple debate of "from above or from below" (transcranial vs endoscopic).•Lateral Sub-frontal and Superior Interhemispheric seem the most effective, superior and versatile approaches for OGM.•Minimally Invasive Transcranial approaches showed no inferiority in OGM sized <4 ​cm.•Endoscopic Endonasal Approaches showed inferior results in surgical and in functional outcomes for OGM.Brain & spine101661https://www.ebi.ac.uk/biostudies/studies/S-EPMC9808463biostudies-literatureOlfactory Groove Meningiomas: Comprehensive assessment between the different microsurgical transcranial approaches and the Endoscopic Endonasal Approaches, systematic review and metanalysis on behalf of the EANS skull base section.PMC9808463Nieto-Librero ABGalindo-Villardon PJouanneau EMesserer MBruneau MCornelius JFSchroeder HWSGoncalves Sanchez JBerhouma MEkkehard KTatagiba MVoormolen ERoa Montes de Oca JCFroelich SVisocchi MZazpe IMazzatenta DMeling TRoa Ramirez CJDaniel RTGoncalves Estella JMParaskevopoulos DRoche PHfalseOlfactory Groove Meningiomas: Comprehensive assessment between the different microsurgical transcranial approaches and the Endoscopic Endonasal Approaches, systematic review and metanalysis on behalf of the EANS skull base section.•OGM surgery is much more complex than a simple debate of "from above or from below" (transcranial vs endoscopic).•Lateral Sub-frontal and Superior Interhemispheric seem the most effective, superior and versatile approaches for OGM.•Minimally Invasive Transcranial approaches showed no inferiority in OGM sized <4 ​cm.•Endoscopic Endonasal Approaches showed inferior results in surgical and in functional outcomes for OGM.2022-01-01T00:00:00Z20222026-03-16T08:05:58.107Z2025-04-05T15:04:15.942ZS-EPMC98084633660538610.1016/j.bas.2022.101661