Japanese Journal of Neurosurgery
Online ISSN : 2187-3100
Print ISSN : 0917-950X
ISSN-L : 0917-950X
Volume 14 , Issue 1
Showing 1-22 articles out of 22 articles from the selected issue
  • Type: Cover
    2005 Volume 14 Issue 1 Pages Cover1-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Cover
    2005 Volume 14 Issue 1 Pages Cover2-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Index
    2005 Volume 14 Issue 1 Pages Toc1-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages App1-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Shotai Kobayashi
    Type: Article
    2005 Volume 14 Issue 1 Pages 3-9
    Published: January 20, 2005
    Released: June 02, 2017
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    The Japan Standard Stroke Registry, Study (JSSRS) Group, is creating a permanent national acute stroke databank using an international stroke evaluation index. We analysed ultra acute thrombolytic therapy for ischemic stroke. Our data suggests that thrombolysis is effective in acute ischemic stroke in Japan. Concerning brain hemorrhage, our data shows that significantly better results were obtained from selectivery operated patients. The JSSRS system is basically working as a self computed database for acute stroke hospitals. Therefore, this database can help to confirm statistical data concerning patients and provide to make compaisions with other hospitals or Japanese data easily. It may also be a great help for preparing original data for informed consent and for information on hospital stroke therapy.
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 9-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Toshikaki Sano, Hidehisa Horiguchi, Shozo Yamada
    Type: Article
    2005 Volume 14 Issue 1 Pages 10-17
    Published: January 20, 2005
    Released: June 02, 2017
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    The new WHO classification of pituitary adenomas, which will be published in autumn 2004, is based on the histopathological classification of Kovacs et al. and include growth hormone (GH) producing adenoma, prolactin (PRL) producing adenoma, thyroid stimulating hormone (TSH) producing adenoma, adrenocorticotropic hormone (ACTH) producing adenoma, gonadotroph adenoma, null cell adenoma, and unusual plurihormonal adenoma. GH producing adenomas are further subdivided into 5 types : densely granulated somatotroph adenoma, sparsely granulated somatotroph adenoma, mammosomatotroph adenoma, mixed somatotroph-lactotroph adenoma, and acidophil stem cell adenoma. The latter 3 subtypes produce GH and PRL simultaneously. ACTH producing adenomas contain silent ACTH producing adenoma and Crooke's cell adenoma and silent ACTH producing adenomas are further subdivided into subtype 1 and subtype 2 adenomas according to electron microscopic findings. Gonadotroph adenomas are mostly clinically non-functioning adenomas and the most frequent type (about 30% of surgically resected adenomas). Null cell adenomas are defined as tumors negative for all adenohypophysial hormones and related transcription factors. Oncocytoma is classified as a subtype of null cell adenoma. Unusual plurihormonal adenomas include a rare type of silent subtype 3 adenoma, which is clinically similar to prolactinoma and often shows GH, PRL, and/or TSH immunoreactivity. Ptuitary carcinomas are defined as tumors that metastasize to extracranial organs and menincus, and are highly malignant. They show numerous mitosis, cellular atypia and necrotic foci in metastatic lesions but it is hard to see these figures in the primary sites. Atipcal adenomas are introduced as a model to see the possibility for potential metastatic ability, and the presence of mitosis and P53 protein-positive cells and a Ki-67 labelling index of more than 3% are their indicators.
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 17-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Akira Teramoto
    Type: Article
    2005 Volume 14 Issue 1 Pages 18-21
    Published: January 20, 2005
    Released: June 02, 2017
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    The prototype of transsphenoidal surgery (TSS) was developed at the beginning of the 20th century, but it gradually declined mainly because of its dark and narrow operative field. In the 1960s Jules Hardy remarkably restored this technique using the surgical microscope and X-ray fluoroscopy. Since then, microscopic TSS has rapidly become popular worldwide and many variations have been reported. At present, microscopic TSS can be classified into the sublabial approach and the direct nasal (endonasal) one. Although each of them has its own advantages and also weak points, selection usually depends on the surgeon's preference. In the 1990s, endoscopic TSS was developed in this field. It provides a much wider and brighter operative field. Although endoscopic TSS needs special training by surgeons and also further development of instruments, it will become the main stream of TSS in the near future.
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  • Atul H. Goel, Trimurti D. Kadkarni
    Type: Article
    2005 Volume 14 Issue 1 Pages 22-35
    Published: January 20, 2005
    Released: June 02, 2017
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    Background : The aim of the study is to analyze the nature, extensions and dural relationships of hormonally inactive giant pituitary tumors. The relevance of the anatomical relationships to surgery is analyzed. Method : One hundred eighty cases of hormonally inactive pituitary tumors with a maximum dimension of more than 4 cm were analyzed. These cases were surgically treated in our neurosurgical department from 1995 to August 2004. The anatomical extension of these tumors was studied on the basis of radiological features and surgical observations. Depending on the extensions and the nature of their meningeal coverings these tumors were divided into four grades. The grades reflected an increasing order of invasiveness of adjacent dural and arachnoidal compartments. The strategy and outcome of surgery and radiotherapy is analyzed for these four groups. Average duration of follow-up was thirty-six months. Results : There were 80 giant pituitary tumors, which remained within the confines of the sellar dura and under the diaphragma sellae and did not enter into the compartment of the cavernous sinus (Grade I ). Transgression of the medial wall and invasion into the compartment of the cavernous sinus (Grade II) was seen in 57 cases. Elevation of the dura of the superior wall of the cavernous sinus and extension of this elevation into various compartments of brain (Grade III) was observed in 37 cases. Supradiaphragmatic-subarachnoid extension (Grade IV) was seen in 6 patients. The majority of patients were treated by transsphenoidal route. Conclusions : Giant pituitary tumors usually have a meningeal cover and extend into well-defined anatomical pathways. Radical surgery by the transsphenoidal route is indicated and possible in Grade I -III pituitary tumors. Such a strategy offered a reasonable opportunity for recovery in vision and a satisfactory post-operative and long-term outcome. Biopsy of the tumor followed by radiotherapy could be suitable for GradelV pituitary tumors.
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  • Yoko Kato, Hirotoshi Sano, Minoru Yoneda, Shingo Maeda, Takashi Kaito, ...
    Type: Article
    2005 Volume 14 Issue 1 Pages 36-44
    Published: January 20, 2005
    Released: June 02, 2017
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    Giant or intracranial aneurysms are the vascular challenge. At our department, wehave treated one hundred and twenty three patients with or intracranial aneurysms between 1975 and2003. These included 29 anterior circulation partially thrombosed aneurysms. 66 aneurysms morethan 2.5 cms and 57 were large aneurysms between 2 and 2.5 cms. With our experience in surgical treatment of 123 cases, we that the technique is and and not just of the neck. Parent vessel reconstruction is the primary in giant or large aneurysms. Various technical skills need tobe developed during the management of these difficult cases. These include clipping techniques like short timetemporary clipping, tentative clipping, tandem clipping. The surgeon needs to be well versed with the various clipsavailable like fenestrated clips, booster clips, dome etc. Many thrombectomy, aneurysmectomy and vessel suturing procedures are required. It is equally necessary to have intraoperative confirmation by using either intraoperative DSA (digital subtraction angiography) or neuroendoscopy.
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 44-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Shunichi Harada, Takafumi Kaito, Shuei Imizu, Shinya Nagahisa, Motohar ...
    Type: Article
    2005 Volume 14 Issue 1 Pages 45-49
    Published: January 20, 2005
    Released: June 02, 2017
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    A 29-year-old man presented with a sudden motor weakness on the left hand, foot and face during sexual intercourse. A diffusion weighted MRI image revealed a high intensity spot on the right basal ganglia. A cerebral angiogram and three dimensional computed tomography of the cerebral artery demonstrated a marked stenosis and an intimal flap on the supraclinoid portion of the right internal carotid artery. He fully recovered and received antiplatelet drug medication without recurrence. Dissection of the internal carotid artery (ICA) is very rare, especially in the intracranial portion of the ICA, and in this case, collateral supply from the left internal carotid artery to the right hemisphere was sufficient to prevent neurological deficits.
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 50-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 51-52
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 52-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 53-56
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 57-58
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 59-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 59-
    Published: January 20, 2005
    Released: June 02, 2017
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  • Type: Appendix
    2005 Volume 14 Issue 1 Pages 60-
    Published: January 20, 2005
    Released: June 02, 2017
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    Download PDF (114K)
  • Type: Cover
    2005 Volume 14 Issue 1 Pages Cover3-
    Published: January 20, 2005
    Released: June 02, 2017
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