{Reference Type}: Review
{Title}: Operative management of trigeminal schwannomas: based on a modified classification in a study of 93 cases.
{Author}: Yin J;Wu Y;Zhang Z;Zhang Y;He J;Yang Z;Wang B;Wang X;Liu G;Bie Z;Liu P;
{Journal}: Acta Neurochir (Wien)
{Volume}: 165
{Issue}: 12
{Year}: 2023 Dec 24
{Factor}: 2.816
{DOI}: 10.1007/s00701-023-05857-3
{Abstract}: <B>BACKGROUND: </B>Advances in microscopic and endoscopic surgical techniques have outpaced traditional classification and transcranial surgical strategies, especially with reference to the treatment of trigeminal schwannomas (TSs). A modified TS classification is proposed and appropriate surgical strategies are discussed.<BR><B>METHODS: </B>The cases of 93 patients who underwent surgical treatment in Beijing Tiantan Hospital in the previous 6 years were analyzed retrospectively, and a literature review was conducted.<BR><B>RESULTS: </B>Classification is based on surgical direction. Tumors were classified as follows: type A, backward orientation, located in the orbit or orbit and middle cranial fossa (8 cases, 8.6%); type B, upward orientation, located in the pterygopalatine fossa, infratemporal fossa or pterygopalatine fossa, infratemporal fossa, and middle cranial fossa (23 cases, 24.7%); type C, forward and backward orientations, located in the middle cranial fossa, posterior cranial fossa or both (58 cases, 62.4%); and type D, located in multiple regions (4 cases, 4.3%). 91.40% of patients underwent gross total resection (GTR) with 29 cases receiving endoscopic resection of whom 93.10% (27/29) experienced GTR.<BR><B>CONCLUSIONS: </B>The 93 cases were satisfactorily divided into four types, according to tumor location and surgical orientation, enabling safe and effective removal by appropriate surgery.