TY - JOUR
T1 - Endoscopic endonasal surgery for anterior skull base meningiomas
AU - Avery, Michael B.
AU - Barkhoudarian, Garni
AU - Kelly, Daniel F.
N1 - Publisher Copyright:
© The Author(s) 2021.
PY - 2021
Y1 - 2021
N2 - Meningiomas of the tuberculum sellae, planum sphenoidale and olfactory groove region are relatively common. Traditionally these meningiomas have been approached through several transcranial approaches. More recently, keyhole approaches have been utilized with success even for large tumors. Endoscopic approaches are an extension of this philosophy, which, in carefully selected patients, may be an excellent alternative, offering a direct line of site from an endonasal approach without brain retraction. Furthermore, bilateral optic canal decompression can be safely and effectively accomplished. We propose that a majority of tuberculum sellae and posterior planum meningiomas may be removed via an endonasal approach, particularly those that are 3 cm or smaller in maximal diameter with minimal lateral extension beyond the supraclinoid carotid arteries and with medial optic canal invasion. A deepened sella is also a favorable factor for endonasal removal. In contrast, we propose that a minority of olfactory groove meningiomas are ideal candidates for endoscopic trans-cribriform removal given the higher risk of anosmia and cerebrospinal fluid leak via the nasal corridor. Instead, a majority of these tumors can be safely and effectively removed via a transcranial keyhole approach, such as the supraorbital “eyebrow” craniotomy or traditional pterional craniotomy with a higher rate of olfaction preservation.
AB - Meningiomas of the tuberculum sellae, planum sphenoidale and olfactory groove region are relatively common. Traditionally these meningiomas have been approached through several transcranial approaches. More recently, keyhole approaches have been utilized with success even for large tumors. Endoscopic approaches are an extension of this philosophy, which, in carefully selected patients, may be an excellent alternative, offering a direct line of site from an endonasal approach without brain retraction. Furthermore, bilateral optic canal decompression can be safely and effectively accomplished. We propose that a majority of tuberculum sellae and posterior planum meningiomas may be removed via an endonasal approach, particularly those that are 3 cm or smaller in maximal diameter with minimal lateral extension beyond the supraclinoid carotid arteries and with medial optic canal invasion. A deepened sella is also a favorable factor for endonasal removal. In contrast, we propose that a minority of olfactory groove meningiomas are ideal candidates for endoscopic trans-cribriform removal given the higher risk of anosmia and cerebrospinal fluid leak via the nasal corridor. Instead, a majority of these tumors can be safely and effectively removed via a transcranial keyhole approach, such as the supraorbital “eyebrow” craniotomy or traditional pterional craniotomy with a higher rate of olfaction preservation.
KW - Meningioma
KW - anterior skull base
KW - endoscopy
KW - olfactory groove
KW - optic canal decompression
KW - planum sphenoidale
KW - tuberculum sellae
UR - http://www.scopus.com/inward/record.url?scp=85139306998&partnerID=8YFLogxK
U2 - 10.20517/2574-1225.2021.05
DO - 10.20517/2574-1225.2021.05
M3 - Review article
AN - SCOPUS:85139306998
SN - 2574-1225
VL - 5
JO - Mini-invasive Surgery
JF - Mini-invasive Surgery
M1 - 17
ER -