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Tentorium neurinoma

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https://www.readbyqxmd.com/read/21799230/-operative-neurosurgery-personal-view-and-historical-backgrounds-8-suboccipital-craniotomy-sitting-position-linear-incision
#1
Yasuhiro Yonekawa
Suboccipital craniotomy (SOC) can be classified into three types: midline, paramedian and lateral according to the site of linear incision. They are subdivided horizontally into cranial, intermediate and caudal, while the latter of the lateral SOC should be included into the paramedian caudal one (Fig. 1, 19). Sitting position for the craniotomy has several advantages over other positionings in spite of several known drawbacks especially air embolism: cleanliness of the operative field, good anatomical orientation, wider operative spaces obtained by gravitational downward displacement of the cerebellar hemisphere above all...
August 2011: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/19249154/pulmonary-meningioma-and-neurinoma-associated-with-multiple-cns-tumours-in-a-patient-with-neurofibromatosis-type-2
#2
Jan Walter, Susanne A Kuhn, Michael Brodhun, Rupert Reichart, Rolf Kalff
OBJECTIVE: Neurofibromatosis type 2 (NF2) is a common neurocutaneous disorder that exhibits an autosomal dominant inheritance, with a mutation at chromosome 22q12.2. Two forms can be distinguished: the Wishart-phenotype with an early and aggressive course and the Feiling-Gardner-phenotype with a less dramatic presentation. In general, patients present bilateral vestibular schwannomas, meningiomas and neurinomas of the central and peripheral nervous system as well as neurofibromas and gliomas...
June 2009: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/12003270/haemorrhagic-venous-infarction-following-the-posterior-petrosal-approach-for-acoustic-neurinoma-surgery-a-report-of-two-cases
#3
Joji Inamasu, Ryuzo Shiobara, Takeshi Kawase, Jin Kanzaki
The authors report two surgical cases with acoustic neurinoma in which haemorrhagic infarction occurred via a compromise in cerebral deep venous outflow. In both cases, surgery was performed via the posterior petrosal approach, and the neurinomas were completely removed. In the first case, the haemorrhagic infarction was considered to have resulted from transection of the tentorial sinus, the presence of which had not been predictable by preoperative angiography. In the second case, the haemorrhagic infarction was caused by a coagulation of the petrosal vein, which was firmly adherent to a tumour...
March 2002: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/7266765/-temporal-lobe-damage-as-pitfalls-at-subtemporal-transtentorial-approach-author-s-transl
#4
H Abe, M Tsuru, T Ito, Y Nakagawa, S Kaneko, Y Iwasaki, T Aida, H Kamiyama, K Echizenya
It is essential to make a proper approach to the lesion site and retract brain, thereby securing an adequate field of vision, upon performing operations on patients for lesions of deep temporal lobe and tentorium. Although subtemporal transtentorial approaches to tumors in the tentorium, pyramis and cerebellopontine angle have been described by a number of workers, further studies have to be made on temporal lobe damage as a pitfall since only a few reports have been published to date. We have therefore examined the possible factors which are responsible for temporal lobe damage and brain swelling in six cases in which subtemporal transtentorial approaches were made...
June 1981: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/3287202/-neurinoma-of-the-trigeminal-nerve-excision-by-combined-suboccipital-and-pteriono-temporal-approach
#5
REVIEW
I Pelissou, M Sindou, A Goutelle, J Pialat, J Duquesnel
The authors report a recent personal case of trigeminal neurinoma with a topographical extension both in the cerebello pontine angle and the middle cerebral fossa. This 33 year-old female suffered from progressive sensory disturbances of her right hemiface associated with a right fifth nerve motor deficit, a right VI nerve palsy and a tinnitus. CT scan and angiogram were evocative of a right hourglass trigeminal neurinoma. Two successive operative stage through suboccipital route and a pteriono-temporal extra and intradural approach allowed a complete removal of the tumour...
1988: Neuro-Chirurgie
https://www.readbyqxmd.com/read/3266315/trochlear-nerve-meningioma-in-von-recklinghausen-s-disease
#6
T Tada, H Shigeta, H Kobayashi, S Kobayashi, K Sugita
A trochlear nerve meningioma in a patient with von Recklinghausen's disease is reported. The tumour appeared to have originated from the trochlear nerve itself, having no connection either with the neurinomas present in the adjacent regions, or with the tentorium. Histological examinations revealed that the tumour was a meningotheliomatous meningioma and the trochlear nerve fibres were placed in the periphery of the tumours. It was noteworthy that diplopia was not detected either before or after the resection of the trochlear nerve with the tumour...
November 1988: Neurochirurgia
https://www.readbyqxmd.com/read/2287887/improved-visualization-of-posterior-fossa-with-clivoaxial-ct-scanning-plane
#7
COMPARATIVE STUDY
J Kinnunen, A Servo, E M Laasonen, M Porras
Eighteen patients clinically suspected of having acoustic neurinoma were studied in both orbitomeatal and clivoaxial (CA) (the plane perpendicular to clivus) CT scanning planes during the same sessions. On the CA cuts there were highly significantly less (p less than 0.001) artifacts. Also, the tentorium was highly significantly (p less than 0.001) better visualized on the CA cuts. CA cuts could be recommended in cases when artifacts disturb the diagnostics of posterior fossa pathology or when detailed topographic information about pathologic anatomy round the tentorium is needed...
December 1990: Röntgen-Blätter; Zeitschrift Für Röntgen-Technik und Medizinisch-wissenschaftliche Photographie
https://www.readbyqxmd.com/read/1570065/-thoracic-intramedullary-neurinoma-with-multiple-intracranial-meningiomas-case-report
#8
T Morimoto, T Sasaki, T Mochizuki, K Takakura, A Sato
A 42-year-old man suffered from numbness in his right leg in May, 1989, and was admitted to another hospital for examination. Computed tomography and magnetic resonance imaging revealed thoracic intramedullary tumor and multiple intracranial tumors in the right frontal convexity, the right lower surface of the tentorium and the right parietal parasagittal region. In December, he underwent craniotomy and the right frontal tumor was totally removed. It was diagnosed histologically as meningioma. Because of continuing numbness in his right leg, he visited a neurologist at our university and was referred to us for removal of the spinal tumor on April 25, 1990...
April 1992: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/1086546/-significance-of-changesin-the-topography-of-the-superior-cerebellar-artery-in-the-angiographic-diagnosis-of-tumors-of-the-posterior-cranial-fossa-ii
#9
V A Baliazin, A F Savchenko, Iu V Trinitatskiĭ
Typical shifts of the superior cerebellar artery and its segments were studied in 67 vertebral angiogrammes showing 33 acoustic neurinomas, 7 meningiomas of the cerebellopontile angle, 13 cerebellar hemispheres tumours, 10 pontile tumours and 4 meningiomas of the free margin of the tentorium. The rationale of accounting for the angiographic symptom complexes typical for acoustic neurinomas with varying directions of growth were singled out.
July 1976: Voprosy Neĭrokhirurgii
https://www.readbyqxmd.com/read/778908/computed-tomography-in-the-diagnosis-of-extra-axial-posterior-fossa-masses
#10
T P Naidich, J P Lin, N E Leeds, I I Kricheff, A E George, N E Chase, R M Pudlowski, A Passalagua
Extra-axial posterior fossa masses can be diagnosed reliably by computed tomography (CT) in most cases. Acoustic and trigeminal neurinomas, meningiomas, cholesteatomas, and other extra-axial masses can usually be distinguished from intra-axial masses by asymmetric widening of the basal subarachnoid spaces, bone destruction, continuity of the tumor mass with the tentorium or bone, and more sharply defined margins. Multiple-cut study of the posterior fossa improved visualization of the fourth ventricle and basal cisterns...
August 1976: Radiology
https://www.readbyqxmd.com/read/83755/-surgical-treatment-of-tumors-in-the-tentorial-region
#11
K J Oglesnev
On the basis of findings and results obtained in the treatment of 509 patients affected with tumours growing into the tentorial slit (Burdenko Institute, Moscow) the considerably improved surgical possibilities are discussed. Only 17 patients had to be excluded from the operation because of their bad general condition. Ways of access are: supratentorially with transecting of the tentorium, infratentorially with exposure of the tentorium, and the combined infra- and supratentorial method with separation of the tentorium...
1978: Zentralblatt Für Neurochirurgie
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