title: The role of surgery in grade II/III oligodendroglial tumors.
abstract: Supratentorial gliomas WHO grade II and III with an oligodendroglial phenotype are highly infiltrative lesions that preferentially originate in lobar location. Open tumor resection represents one of the mainstays of management as beneficial decompressive effects for large space-occupying lesions and oncologically relevant cytoreductive effects from complete resection can be expected. In patients not eligible for safe tumor resection meticulous histological and molecular-genetic evaluation can be obtained from advanced stereotactic biopsy techniques. In this perspective, important aspects of open tumor surgery and stereotactic biopsy are discussed within the context of diagnosis, prognosis and treatment of oligodendrogliomas and oligoastrocytomas WHO grade II and III. Practical considerations are provided in order to integrate the place of surgery into an increasingly personalized management concept. For highly selected patients interstitial brachytherapy is introduced as an alternative surgically performed treatment option.
authors.affiliation: Department of Neurosurgery, Hospital of the University of Munich, Campus Grosshadern, Munich, Germany.
authors.forename: Niklas
authors.initials: N
authors.lastname: Thon
authors.affiliation: Department of Neurosurgery, Hospital of the University of Munich, Campus Grosshadern, Munich, Germany.
authors.forename: Friedrich-Wilhelm
authors.initials: FW
authors.lastname: Kreth
authors.affiliation: Department of Neurosurgery, Hospital of the University of Munich, Campus Grosshadern, Munich, Germany.
authors.forename: Joerg-Christian
authors.initials: JC
authors.lastname: Tonn
mesh_terms: D001254:Astrocytoma / Q000175:diagnosis / Q000601:surgery*; D001918:Brachytherapy; D001932:Brain Neoplasms / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D059906:Neuroimaging; D009837:Oligodendroglioma / Q000175:diagnosis / Q000601:surgery*; D013238:Stereotaxic Techniques
keywords: astrocytoma; brachytherapy; eloquent location; extent of resection; high-grade glioma; imaging; iodine-125 seeds; low-grade glioma; microsurgery; molecular-genetic markers; oligoastrocytoma; oligodendroglioma; prognosis; resectability; stereotactic biopsy