The phyogenetic principles of mma: A hypothetical biostratigraphic model

Two erectoid hominids from Sarstedt prompted a detailed examination of the course of the impressions of the Arteria meningea media and their characteristics within the line of hominidae

Typical 3-D localization of tumor remnants of WHO grade II hemispheric gliomas--lessons learned from the use of intraoperative high-field MRI control

Complete resection of grade II gliomas might prolong survival but is not always possible. The goal of the study was to evaluate the location of unexpected grade II gliomas remnants after assumed complete removal with intraoperative (iop) MRI and to assess the reason for their non-detection

Predictive factors for beneficial application of high-frequency electromagnetics for tumour vaporization and coagulation in neurosurgery

<p>Abstract</p> <p>Objective</p> <p>To identify preoperative and intraoperative factors and conditions that predicts the beneficial application of a high-frequency electromagnetic field (EMF) system for tumor vaporization and coagulation.</p> <p>Methods</p> <p>One hundred three subsequent patients with brain tumors were microsurgically treated using the EMF system in addition to the standard neurosurgical instrumentarium. A multivariate analysis was performed regarding the usefulness (ineffective/useful/very helpful/essential) of the new technology for tumor vaporization and coagulation, with respect to tumor histology and location, tissue consistency and texture, patients' age and sex.</p> <p>Results</p> <p>The EMF system could be used effectively during tumor surgery in 83 cases with an essential contribution to the overall success in 14 cases. In the advanced category of effectiveness (very helpful/essential), there was a significant difference between hard and soft tissue consistency (50 of 66 cases vs. 3 of 37 cases). The coagulation function worked well (very helpful/essential) for surface (73 of 103 cases) and spot (46 of 103 cases) coagulation when vessels with a diameter of less than one millimeter were involved. The light-weight bayonet hand piece and long malleable electrodes made the system especially suited for the resection of deep-seated lesions (34 of 52 cases) compared to superficial tumors (19 of 50 cases).</p> <p>The EMF system was less effective than traditional electrosurgical devices in reducing soft glial tumors. Standard methods where also required for coagulation of larger vessels.</p> <p>Conclusion</p> <p>It is possible to identify factors and conditions that predict a beneficial application of high-frequency electromagnetics for tumor vaporization and coagulation. This allows focusing the use of this technology on selective indications.</p

Basic Set of Neurosurgical Instruments - Presented by the World Federation of Neurosurgical Societies and Aesculap ( http://www.wfns.org/set_instruments.html )

The Basic Set of Nerological Instruments has been selected and compiled for classic emergency decompression procedures such as craiotomy, laminectomy and peripheral nerve surgery. The WFNS and Aesculap have succeeded in preparing a set that is the perfect addition to the general set of instruments available in almost every surgical department around the world

Surgery of vestibular schwannomas

Vestibular schwannomas (VS) are the most common tumors of the cerebellopontine angle (CPA). Their surgical management has reached high standards in the last decade. Treatment options for VS are microsurgical removal or Radiosurgery. The following three basic operative approaches are currently utilized: Retrosigmoid approach (RSA), translabyrinthine and middle fossa approach. The following article elaborates the operative technique by the senior author based on his vast experience of VS surgery formed over the last three decades; during which period he has operated more than 3500 of such patient