Susumu Yoshioka

University Hospital Medical Information Network, Tokyo, Tokyo-to, Japan

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Publications (8)14.19 Total impact

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    ABSTRACT: Deep brain stimulation (DBS) of the ventral intermediate nucleus of the thalamus (VIM) is a powerful surgical option in the treatment of tremor-predominant Parkinson's disease. However, its therapeutic efficacy depends on the tremor distribution. DBS is highly efficient in relief of distal appendicular tremor but not other types of tremor. Also, it is generally thought that DBS of the VIM has no significant beneficial effects on other motor symptoms of Parkinson's disease. We report two hemiparkinsonian patients, in whom unilateral VIM DBS combined with posteroventral pallidotomy produced long-lasting suppression of not only hand tremor, but also leg or jaw tremor and other motor symptoms.
    Journal of Clinical Neuroscience 08/2009; 16(11):1489-91. · 1.25 Impact Factor
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    ABSTRACT: The authors report a rare example of an isolated dissecting posterior inferior cerebellar artery (PICA) aneurysm with spontaneous resolution. A 41 year-old male suffered sudden dizziness, nausea and vomiting. An angiogram and magnetic resonance imaging (MRI) detected an isolated PICA dissection. The patient was treated conservatively and recovered without any apparent neurological deficit. MRI detected the self-resolution of the dissecting aneurysm. Dissecting PICA aneurysms, especially non-haemorrhagic lesions, have the possibility of spontaneous resolution resulting in a favorable outcome. The treatment strategy for this vascular lesion may be decided based upon neuroradiological changes on careful follow-up.
    Acta Neurochirurgica 02/2008; 150(1):77-81; discussion 81. · 1.55 Impact Factor
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    ABSTRACT: The authors report a case of cerebellar cavernous malformation associated with moyamoya disease. An adolescent male with moyamoya disease had undergone bilateral direct and indirect extracranial-intracranial anastomosis at 11 years of age, and the course had been uneventful until MRI detected the appearance of a cavernous malformation in the cerebellum 3 years later. The lesion had grown, bled, and caused headache and disturbance of consciousness 2 years after the initial detection. The cavernous malformation was removed surgically and pathologically verified. The patient has recovered without any neurological deficits. This is a quite rare case with cavernous malformation which appeared in a moyamoya disease patient. The association of the two different vascular disorders in a young patient may suggest the existence of some interaction in the pathogenesis of these diseases. Since cavernous malformations with a de novo appearance may grow and become clinically significant, careful observation is necessary.
    Clinical Neurology and Neurosurgery 11/2007; 109(8):708-12. · 1.23 Impact Factor
  • Stroke 06/2007; 38(5):e10; author reply e11. · 6.16 Impact Factor
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    ABSTRACT: We report a 1-year-old girl who presented moyamoya disease associated with midaortic syndrome. She had been treated for cardiac failure and severe hypertension due to midaortic syndrome until she suffered seizure and repeated cerebral ischemic attack. Cerebral angiography revealed stenosis of the bilateral internal carotid artery at its terminal portion. She was successfully treated with encephaloduroarteriosynangiosis, and ischemic attack ceased postoperatively. This is the first report of moyamoya disease with midaortic syndrome. Although cerebral ischemic attack has been effectively managed by encephaloduroarteriosynangiosis, renovascular hypertension is still difficult to control.
    Pediatric Neurosurgery 02/2007; 43(1):54-9. · 0.42 Impact Factor
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    ABSTRACT: This 77-year-old woman with a rapidly enlarging chordoid meningioma first noticed a growing, non-pulsatile, nonpainful soft mass in the left temporal region after a head trauma 2 years earlier. Neuroimaging showed a homogeneously enhanced osteolytic mass lesion in the left temporal bone. Surgery revealed an extradural tumor without significant adhesions. Histopathologically it was a meningioma with features reminiscent of chordoma. Most of the tumor cells contained mucin-rich chordoid elements. Immunohistochemically, the lesion was positive for vimentin and epithelial membranous antigen; it was negative for cytokeratin and S-100 protein. Based on these findings a diagnosis of chordoid meningioma was made. We posit that the rapid enlargement of the tumor over a relatively short period was attributable to its high mucin-producing activity.
    Neuropathology 11/2006; 26(5):438-41. · 1.91 Impact Factor
  • Surgery for Cerebral Stroke 01/2003; 31(4):263-268.
  • Masahito Kurino, Susumu Yoshioka, Yukitaka Ushio
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    ABSTRACT: Intracranial dissecting aneurysms have been reported with increasing frequency and are recognized as a common cause of stroke. In some reviews and case reports, attempts have been made to compare the outcomes of surgical and medical treatments. However, the appropriate management of dissecting aneurysms in the anterior circulation remains controversial, especially in patients who also manifest cerebral infarction. A 45-year-old male was diagnosed as having a dissecting aneurysm of the right middle cerebral artery (MCA) with cerebral infarction. In the course of conservative treatment, he developed a new cerebral infarction in the territory of the right anterior cerebral artery (ACA). Repeat cerebral angiograms revealed an increase in the aneurysmal dilatation of the right M2 and the appearance of a segmental dilatation of the right A2. He continued to be treated conservatively and his course was satisfactory. On subsequent angiograms, we observed resolution of the right A2 dissection and no further progression of the dilatation of the right M2. This is the first reported case of simultaneous idiopathic dissecting aneurysms of different major arterial branches in the anterior circulation. Our review of the literature disclosed 36 and 23 cases, respectively, of dissecting aneurysms of the ACA and MCA. Many previously reported patients with these dissecting aneurysms involving subarachnoid hemorrhage (SAH) underwent surgery, which resulted in better outcome. More than half of the patients with ACA and MCA dissecting aneurysms had cerebral infarction. All ACA dissecting aneurysms involving ischemia occurred in the A2 region. The outcomes of both surgical and conservative management were equally satisfactory. On the other hand, in patients with MCA dissecting aneurysms, the area of ischemia frequently involved the M1 region; in these patients, conservative treatment resulted in poor outcomes. Therefore, revascularization distal to the compromised artery should be considered in patients with MCA-dissecting aneurysms who have ischemia. Careful interpretation of serial angiograms and/or magnetic resonance (MR) images is necessary because of the possibility of disease progression. If the aneurysmal size increases or there is progression of ischemic symptoms in the course of conservative treatment, surgery must be urgently evaluated.
    Surgical Neurology 07/2002; 57(6):428-36; discussion 436-8. · 1.67 Impact Factor

Publication Stats

30 Citations
14.19 Total Impact Points

Institutions

  • 2007
    • University Hospital Medical Information Network
      • Department of Neurosurgery
      Tokyo, Tokyo-to, Japan
  • 2006
    • Kumamoto University
      • Department of Neurosurgery
      Kumamoto, Kumamoto Prefecture, Japan