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  • 1
    ISSN: 1437-2320
    Keywords: Key words Cerebral microdysgenesis ; Hippocampal sclerosis ; Histopathology ; Temporal lobe epilepsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The number of patients undergoing surgical treatment for pharmacoresistant temporal lobe epilepsy is rapidly increasing. While there have been many clinicopathological studies concerning the medial structures of the temporal lobe in temporal lobe epilepsy, its lateral structures have received little attention. To examine the nature and frequency of lateral temporal lobe abnormalities that occur in temporal lobe epilepsy, 22 patients who underwent standard anterior temporal lobectomy with hippocampectomy for intractable temporal lobe epilepsy were studied. The mean ages at the onset of seizure and at surgery were 15.9 years and 27.7 years, respectively. The electroclinically determined epileptogenic zones were the medial structures of the temporal lobe in 16 patients and the lateral in six. There was histologic evidence of hippocampal sclerosis in 12 of the 16 patients with medial onset seizures and in three of the six patients with lateral onset seizures. The lateral structures of the temporal lobe showed variable degrees of histological abnormalities in 21 patients. Among these abnormalities, heterotopic white matter neurons were observed in six of the 16 medial patients and in all the lateral patients. Glial changes were also common abnormalities, and often glial fibrillary acidic protein (GFAP)-positive astrocytes were present over the entire temporal lobe. In addition to hippocampal sclerosis, cerebral microdysgenesis and gliosis in the lateral structures of the temporal lobe may have a significant role in epileptogenesis of temporal lobe epilepsy.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0047-6374
    Keywords: Aging ; IL-2 internalization ; IL-2 receptor ; p55/Tac(α chain) ; p70/75(β chain)
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0942-0940
    Keywords: Glioma ; thalamus ; treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty patients (M 11, F 9; ranging from 1–77 years old) with histologically proven glial tumours in the thalamic region, treated from 1979 until 1994 at Kyushu University Hospital were retrospectively reviewed and analysed in order to elucidate their clinical and neuropathological characteristics. The initial common clinical manifestations were those of increased intracranial pressure or motor weakness. The histological diagnosis of the tumour was pilocytic astrocytoma in 2 patients, fibrillary astrocytoma in 7, anaplastic astrocytoma in 7, and glioblastoma multiforme in 4. The initial treatment was surgery alone in 4 patients, surgery followed by radiation therapy in 5, surgery followed by radiation therapy and chemotherapy in 9, and conventional radiation therapy alone in 2 patients. The 3-year overall actuarial survival rate for all patients was 20% but was related to both the histological type and the age of the patients: As a result, the rate was 44% for patients with low-grade astrocytoma compared to 0% for those with high-grade astrocytoma. While 5 out of 11 patients under the age of 25 years at their initial presentation have survived for from 2–16 years after the diagnosis, all patients presenting after the age of 25 years died within 3 years after treatment. Thalamic glial tumours are not a homogeneous group of tumours in terms of clinical behaviour and histopathological features, and the poor overall results, especially in adult tumours, thus emphasise the need for continued research in the treatment of these tumours.
    Type of Medium: Electronic Resource
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