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CONTEXT There are no controlled studies on surgical treatment of diffuse low-grade gliomas (LGGs), and management is controversial. OBJECTIVE To examine survival in population-based parallel cohorts of LGGs from 2 Norwegian university hospitals with different surgical treatment strategies. DESIGN, SETTING, AND PATIENTS Both neurosurgical departments are(More)
BACKGROUND Surgical management of suspected LGG remains controversial. A key factor when deciding a surgical strategy is often the tumors' perceived relationship to eloquent brain regions OBJECTIVE To study the association between tumor location, survival and long-term health related quality of life (HRQL) in patients with supratentorial low-grade gliomas(More)
Background. Discovering an intracranial aneurysm may profoundly affect the patient’s quality of life. Patients living with unruptured and untreated aneurysms often report symptoms of anxiety and depression. There are few trials studying the quality of life after treatment of unruptured intracranial aneurysms. We aimed to compare the quality of life and(More)
Intraoperative ultrasound imaging is used in brain tumor surgery to identify tumor remnants. The ultrasound images may in some cases be more difficult to interpret in the later stages of the operation than in the beginning of the operation. The aim of this paper is to explain the causes of surgically induced ultrasound artefacts and how they can be(More)
BACKGROUND Numerous observational studies indicate that more aggressive resection may prolong survival in glioblastoma patients. In Trondheim, Norway, intraoperative 3D ultrasound has been in increasing use since November 1997. The aim of the present study was to examine if the introduction of 3D ultrasound and neuronavigation (i. e., the SonoWand® system)(More)
Meningiomas may influence both survival and neurological functions. Studies assessing the impact of surgery on health-related quality of life (HRQL) remain absent. In this prospective study we aimed to describe HRQL dynamics before and after surgery in patients with meningiomas. HRQL assessments were performed using EuroQol-5D (EQ-5D), a generic HRQL(More)
Background. Primary arachnoid cysts are benign developmental lesions of arachnoid mater. Arachnoid cysts may be detected due to various neurological symptoms, or they may be encountered as incidental findings of neuroimaging. Consequently, a significant share of the patients seems asymptomatic. There are diverging opinions about the clinical importance of(More)
BACKGROUND Functional neuronavigation with intraoperative 3-dimensional (3D) ultrasound may facilitate safer brain lesion resections than conventional neuronavigation. OBJECTIVE In this study, functional magnetic resonance imaging (fMRI) and diffusion tensor tractography (DTT) were used to map eloquent areas. We assessed the use of fMRI and DTT for(More)
Provider volume is often a central topic in debates about centralization of procedures. In Norway, there is considerable variation in provider volumes of the neurosurgical centers treating children. We sought to explore long-term survival after surgery for central nervous system tumors in children in relation to regional provider volumes. Based on data from(More)
OBJECTIVE Gross total resection (GTR) prolongs survival but is unfortunately not achievable in the majority of patients with glioblastoma multiforme (GBM). Cytoreductive debulkings may relieve symptoms of mass effect, but it is unknown how long such effects sustain and to what degree the potential benefits exceed risks. We explore the impact of surgical(More)