Uta Schick
Heidelberg University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Uta Schick.
Acta Neurochirurgica | 2011
Carla S. Jung; Klaus Zweckberger; Uta Schick; Andreas Unterberg
PurposeDuring the last winter season, some fatal sport injuries with severe traumatic brain injury (TBI) prompted major discussions about protective helmet use. Although ski helmets reportedly lead to a 60% decrease of risk to incur TBI, little is known about the distribution of helmet users and which factors are crucial for the decision to wear a helmet. Especially, it is unknown whether knowledge or experience concerning TBI in winter sports influences the use of helmets, as well as the attitude and opinion of people.MethodsSince treatment of TBI is a major field in neurosurgery, 55 neurosurgical departments (NS) in Germany, Switzerland and Austria were addressed and asked to answer anonymous questionnaires. A “non-trauma-educated” control cohort (NTP) was interviewed in ski resorts in Austria as well as sports equipment stores in Germany.ResultsQuestionnaires were returned by 465 NS and 546 NTP. Half of NS and NTP wore helmets in winter sports. Although some interviewees showed cognitive dissonant behaviour, experience in TBI after ski or snowboard accidents significantly affected the decision to wear helmets. After the fatal ski accidents, and increased media coverage 15.4% NS and 13.2% NTP bought their helmet. Furthermore, incidence of helmet use in children was correlated with the actual use and disposition of their parents to make the use of helmet compulsory.ConclusionsThis study indicates that brain-trauma education affects ones attitude and opinion concerning protective helmet use in winter sports. However, without neglecting educational measures, emotional arguments should be added in the promotion of helmets to make them a popular integral part of winter sport outfits.
Clinical Neurology and Neurosurgery | 2009
Uta Schick; Werner Hassler
OBJECTIVE In this article, we discuss the clinical features and endovascular and/or surgical treatment of deep vascular orbital malformations. METHODS We report on our treatment of 58 cases of vascular malformations of the orbit between 1991 and 2008. RESULTS Arterial low flow lesions, such as cavernomas (n=44) were the most common finding. These were treated by complete excision. High flow lesions such as angiomas were less common (n=4). These were treated by the endovascular and/or surgical approach. Venous flow lesions appear as distensible lesions (n=3) or non-distensible anomalies (n=4). Deep venous lesions (n=7) should be treated if they cause severe pain, progressive proptosis, motility disturbances or visual deterioration. No flow lesions include lymphangiomas (n=3). Surgery may be helpful in specific cases with intracystic haemorrhage and progressive proptosis. Patients with severe visual deterioration do not improve, whereas all other symptoms are potentially reversible. CONCLUSIONS Treatment of vascular malformations is required in case of progression of symptoms. In cases of visual deterioration, we generally favour early treatment. The least invasive surgical approach, tailored to the individual patient, should be chosen.
Clinical Neurology and Neurosurgery | 2015
Hamid Borghei-Razavi; Ryosuke Tomio; Seyed Mohammad Fereshtehnejad; Shunsuke Shibao; Uta Schick; Masahiro Toda; Takeshi Kawase; Kazunari Yoshida
OBJECT Anterior petrosectomy through the middle fossa is a well-described option for addressing cranial base lesions of the petroclival region. To access posterior fossa through middle fossa, we quantitatively evaluate the safety of Kawase triangle as an anatomical landmark. METHOD We reviewed pre- and postoperative Multi-Slice CT scan (1mm thickness) of patients with petroclival meningioma between Jan 2009 and Sep 2013 in which anterior petrosectomy was performed to access the posterior fossa part of the tumor. The distances between drilling start and finish edge to the vital anatomical skull base structures such as internal auditory canal (IAC) and superior semicircular canal and petrous apex (petrous part of the carotid artery) were measured and analyzed. RESULTS Drilling entrance length is directly related with tumor size. The distances between anatomical structures and drilling points decrease with increasing tumor size, but it always remains a safe margin between drilling points and IAC, internal carotid artery (ICA), and semicircular canals in axial and coronal views. CONCLUSION The Kawase triangle is shown to be a safe anatomical landmark for anterior petrosectomy. The described landmarks avoid damage to the vital anatomical structures during access to the posterior fossa through middle fossa, despite temporal bone anatomical variations and different tumor sizes.
Journal of Clinical Neuroscience | 2012
Mahmoud Reza Khalatbari; Hamid Borghei-Razavi; Mohammad Samadian; Yashar Moharamzad; Uta Schick
Between January 2000 and January 2011, we diagnosed three patients with isolated craniopharyngioma in the cerebellopontine angle (CPA). Brain MRI revealed cystic lesions with various imaging characteristics, including hypointensity on T1-weighted (T1W) images and hyperintensity on T2-weighted (T2W) images. The first patients lesion showed rim enhancement after gadolinium administration. The second patients lesion showed mixed signal intensity on both T1W and T2W images. The third patients MRI showed a well-defined cystic lesion in the right CPA that compressed the brainstem. This lesion was hyperintense on T1W images and hypointense relative to cerebrospinal fluid on T2W images, and was peripherally enhanced after gadolinium administration. All three patients underwent surgical intervention through a suboccipital retrosigmoid craniotomy/craniectomy and lesions that did not adhere to adjacent tissues were removed completely. Histopathological examination confirmed the tumors to be adamantinomatous craniopharyngioma. The post-operative course was uneventful for all patients uneventful and no tumor recurrences were detected at the last follow-up. Primary CPA craniopharyngioma can be completely removed surgically, provided it does not densely adhere to vital structures.
Clinical Neurology and Neurosurgery | 2013
Klaus Zweckberger; Andreas Unterberg; Uta Schick
OBJECTIVES With respect to its characteristic pattern of growth from the orbit into the intracranial space toward the chiasm, patients with optic nerve sheath meningiomas (ONSM) are threatened to loose function of both optic nerves. Fortunately, in less than 5% both optic nerves are involved initially. Hence, prevention of vision of the contralateral eye is the foremost aim of any therapy. Performing pre-chiasmatic transection might offer a further treatment option to avoid further tumor growth toward the chiasm. PATIENTS AND METHODS In this retrospective study 12 patients with ONSM and blindness of the affected eye were included. The surgical approach was performed either from pterional intradural or as a combined approach from pterional extra- and intradural. RESULTS Without any exceptions, vision of the contralateral eye could be preserved and did not show any deterioration after surgery or during the follow-up time of 50.6 months. Furthermore in 58.3% of patients gross total tumor resection could be achieved. During follow up observation in 67% of patients no further tumor progress or recurrences could be observed. 4 patients, however, showed delayed tumor progress or recurrences that were treated by radiotherapy. CONCLUSION Pre-chiasmatic transection of the optic nerve might offer a surgical treatment option to control tumor growth and to preserve vision of the contralateral eye.
Journal of Neurological Surgery Reports | 2013
Hamid Borghei-Razavi; Omid Darvish; Uta Schick
Microvascular compression of the vestibulocochlear nerve is known as a cause of tinnitus and vertigo in the literature, but our review of the literature shows that the compression is usually located in the cerebellopontine angle and not intrameatal. We present a case of intrameatal compression of the anterior inferior cerebellar artery (AICA) on the vestibulocochlear nerve of a 40-year-old woman with symptoms of disabling vertigo and intermittent high-frequency tinnitus on the left side without any hearing loss for ∼ 4 years. Magnetic resonance imaging of the brain did not show any abnormality, but magnetic resonance angiography showed a left intrameatal AICA loop as a possible cause of the disabling symptoms. After the exclusion of other possible reasons for disabling vertigo, surgery was indicated. The intraoperative findings proved the radiologic findings. The large AICA loop was found extending into the internal auditory canal and compressing the vestibulocochlear nerve. The AICA loop was mobilized and separated from the vestibulocochlear nerve. The patients symptoms resolved immediately after surgery, and no symptoms were noted during 2 years of follow-up in our clinic. Her hearing was not affected by the surgery. In addition to other common reasons, such as acoustic neuroma, disabling vertigo and tinnitus can occur from an intrameatal arterial loop compression of the vestibulocochlear nerve and may be treated successfully by drilling the internal acoustic meatus and separating the arterial conflict from the vestibulocochlear nerve.
Archive | 2010
Uta Schick; Werner-Erwin Hassler
Spinal vascular malformations are rare and often misdiagnosed entities. They comprise congenital cavernomas, arteriovenous malformations (AVMs) and presumably acquired dural arteriovenous fistulas (dAVFs). AVMs include perimedullary fistulas, glomerular AVMs, and juvenile AVMs (Table 4.4.1). The intradural AVMs are supplied by spinal cordsupplying arteries, whereas the dural malformations are supplied by meningeal arteries as branches of the radicular artery (Fig. 4.4.1). Eighty percent of all spinal AVMs are dural fistulas with an incidence of 5–10/million/year. Dural AVFs first become symptomatic in later adult life, whereas medullary AVMs affect young adults.
Acta Neurochirurgica | 2010
Majid Hashemi; Uta Schick; Werner Hassler; Martin Hefti
Acta Neurochirurgica | 2011
Klaus Zweckberger; Carla S. Jung; W. Mueller; Andreas Unterberg; Uta Schick
Acta Neurochirurgica | 2009
Werner Hassler; Uta Schick