Suprasellar Meningioma Classification: Endoscopic Transnasal Perspective

Abstract Objectives Midline suprasellar meningiomas include planum sphenoidale, tuberculum sellae, and diaphragma sellae meningiomas. Multiple classifications have been previously documented; however, they come with controversies limitations, including those surgical implications. The aim of this study was to classify based on their behavior toward the underlying bone neurovascular structures. Methods Patients newly diagnosed that underwent extended endoscopic transnasal approach between 2015 2021 were included in study. following parameters evaluated: chiasmatic sulcus length, location optic chiasm nerves, canal involvement, vascular displacement. Results We identified 40 cases midline meningiomas, 1 meningioma (type A), 10 B), 9 C), sphenoidale D). Asymmetrical visual complaints most common followed by (66 50%, respectively). Chiasmatic showed increased separation A1/A2 complex (8.9 mm) compared (2.7 (1.9 Compared other types, length observed Conclusions Preoperative evaluation involvement tumor relation structures can be used is a distinct subtype Its unique nearby could value during resection.