Dorsum sellae as key landmark in ETV with disminished prepontine cistern: technical note and case series - Guil-Ibáñez, J J; Parrón-Carreño, T; Gomar-Alba, M; García-Pérez, F; Narro-Donate, J M; Masegosa-González, J (Oper Neurosurg (Hagerstown), 2024)