Search results for "Intracranial tumor"
showing 6 items of 6 documents
Value and limits of computer-assisted tomography.
1980
Three years ago, at the VIIth International Congress of Radiology in Otorhinolaryngology, held in Copenhagen, the early impressive results of computer-assisted tomography (CAT) in otorhinolaryngology were presented. Since considerable technologic and diagnostic progress of CAT has taken place in the meantime, questions about the increase in CAT's value and the expansion of its limits are appropriate now. Computed and, in some cases, conventional tomograms of facial lesions are used in the discussion of these questions. There is no doubt of CAT's advance within the last few years; there are, however, limits of CAT to be emphasized: (a) coronal CAT might be uncomfortable (especially if the ga…
Malignant paroxysmal positional vertigo
2011
Objective: An insidious percentage of paroxysmal positional vertigo appears to be intractable with canalith repositioning maneuver and also is not self-limiting. This type of positional vertigo is sustained by the action of intracranial tumors that mimics the clinical aspects of benign paroxysmal positional vertigo.Aim of this study is to clarify the features of these forms of positional vertigo, which we indicate as malignant paroxysmal positional vertigo. Methods: We retrospectively reviewed the clinical records of all the patients who presented with vertigo spells and were managed at our tertiary care referral centre over a three years period. Two hundred and eleven patients with diagnos…
Development and external validation of a clinical prediction model for functional impairment after intracranial tumor surgery
2021
OBJECTIVE Decision-making for intracranial tumor surgery requires balancing the oncological benefit against the risk for resection-related impairment. Risk estimates are commonly based on subjective experience and generalized numbers from the literature, but even experienced surgeons overestimate functional outcome after surgery. Today, there is no reliable and objective way to preoperatively predict an individual patient’s risk of experiencing any functional impairment. METHODS The authors developed a prediction model for functional impairment at 3 to 6 months after microsurgical resection, defined as a decrease in Karnofsky Performance Status of ≥ 10 points. Two prospective registries in…
The association of patient age with postoperative morbidity and mortality following resection of intracranial tumors
2021
Abstract Introduction The postoperative functional status of patients with intracranial tumors is influenced by patient-specific factors, including age. Research question This study aimed to elucidate the association between age and postoperative morbidity or mortality following the resection of brain tumors. Material and methods A multicenter database was retrospectively reviewed. Functional status was assessed before and 3–6 months after tumor resection by the Karnofsky Performance Scale (KPS). Uni- and multivariable linear regression were used to estimate the association of age with postoperative change in KPS. Logistic regression models for a ≥10-point decline in KPS or mortality were b…
Classification of Intracranial Tumors
1981
L. Bruns (1914) stated in Krause’s “General Neurosurgery” that brain tumors included all neoplasms growing within the cranial cavity and that these might be divided into three groups: (1) genuine tumors, (2) granulomatous lesions, and (3) parasites. Current use of the term “brain tumor” is more precise and limited to the first of L. Bruns’ categories. Even so, brain tumors represent a large and inhomoge-neous group. The comparison and evaluation of such a diverse set of observations is only possible after making a systematic classification of pertinent data.
Impact of CT and MR on the Diagnostic Evaluation of Neurologic and Neurosurgical Diseases
1989
Today CT and MR are considered to be the most important and most reliable methods for the diagnosis of brain tumors. The sensitivity of these modalities in the detection of intracranial tumors approaches 100%. The extraordinary value of both methods is based not only on this high detection rate but also on their ability to localize tumors in relation to vital centers, assess their mass effect, and establish the tissue type of the lesion (= specificity).