Publications by authors named "Shigenobu Nakamura"

Bladder cancer is the second most common genitourinary malignancy and has variable metastatic potential; however, choroidal and cutaneous metastases are extremely rare. Generally, a patient with these uncommon metastases has a very poor prognosis. We present a bladder cancer patient with a visual disorder in the right eye and multiple nodules on head and lower abdomen that developed 17 months after a radical cystectomy.

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In kidney transplant recipients, acute renal failure resulting from a ureteral obstruction by fungus balls is uncommon. We report a 60-year-old man diagnosed with ureteral obstruction caused by Candida albicans fungus balls early after transplant. Diagnosis was made by a T2-weighted magnetic resonance image, which demonstrated fungus balls as a low-intensity mass in the pelvis and microscopic examination findings in the urine.

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Background/aims: Dementia is a priority issue in the public health realm. However, few reports address problems of dementia in the real world or provide comprehensive road maps to solve these problems.

Methods: Nine groups of questions covering 4 topics were discussed using the Delphi method, relating to (1) current achievements and challenges regarding inclusive and holistic care in the community, (2) patients who are at a high risk of being excluded from care, (3) suggestions for a road map for the establishment of better and more inclusive medical and social care, and (4) unmet needs of patients with dementia.

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A 66 years old man visited our hospital with a chief complaint of right flank pain and abdominal palpable mass. Abdominal enhanced computed tomography scan showed a large cystic mass with infiltrating surrounding tissue in the right kidney. We diagnosed it infected cystic renal cell carcinoma because of high grade fever and acute inflammatory response.

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We report a case of a 35-year-old man with histologically confirmed neurosarcoidosis who developed recurrent episodes of right-hemispheric dysfunction with diffuse cortical lesions of the right hemisphere on magnetic resonance imaging (MRI). A brain biopsy revealed granulomatous inflammatory cells in both the subarachnoid space and Virchow-Robin space, which might relate to the recurrent neurological dysfunction and MRI findings.

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Although cerebral venous thrombosis (CVT) is generally treated with anticoagulants, some patients have a poor prognosis. We report a 34-year-old woman who developed severe CVT with mental symptoms and intracerebral hemorrhage with central herniation. She had a hypercoagulable state accompanied by thyrotoxicosis.

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The authors describe 2 patients who presented with transient directional disorientation (TDD) as a manifestation of cerebral ischemia. The patients suddenly lost sense of direction in a familiar environment despite preserved ability to recognize landmarks, and recovered within a short time. Brain MRI revealed an ischemic lesion in the right medial occipital lobe and the corpus callosum in case 1 and in the right parieto-occipital sulcus (POS) in case 2.

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Objective: To determine the age-, sex-, and subtype-specific incidence of dementia and to assess the effect of education level on the incidence in a Japanese population.

Methods: 2,286 dementia-free subjects, aged > or =60 years, were followed for 5.9 years through biennial two-phase examinations.

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Progressive supranuclear palsy (PSP) is a progressive degenerative disorder characterized by neuronal loss, gliosis and abnormal fibril formation of abnormally phosphorylated tau protein in neurons and glia cells, but the cause is not clear at present. For the purpose of clarifying the pathological significance of accumulation of tau protein in neurons and oligodendroglia in PSP, we morphologically classified neurofibrillary tangles (NFT) and coiled bodies (CB) in oligodendroglia in three PSP brains into four stages, using double staining for immunohistochemistry with AT8 antibody and modified Gallyas-Braak (GB) staining. AT8-positive neurons without abnormal fibril structure with GB staining were classified as stage I, AT8-positive neurons containing a few fibril structures with GB staining were classified stage II, AT8-positive neurons containing mature fibril structures were classified as stage III, and AT8 negative neurons containing abnormal fibril structures stained only with GB staining were classified as stage IV (ghost tangles).

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Objectives: To quantitatively investigate simultaneous skin blood flow and sweating in a patient with complex regional pain syndrome.

Method: Using one probe, skin blood flow and sweating were measured on the affected and non-affected sides at baseline and after activation of sympathetic system in a 47-year-old woman with complex regional pain syndrome type I of the left hand.

Results: Basal sweating, sympathetic sweat response, basal blood flow, sympathetic flow response, and attrition rate of blood flow (the ratio of sympathetic flow response to basal blood flow) of the affected side were greater than those on the non-affected side.

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Objective: To evaluate the electrophysiological findings of clinically unaffected cranial nerves (facial, accessory and hypoglossal nerves) in hereditary motor and sensory neuropathy (HMSN).

Methods: The conduction times of the facial, accessory, and hypoglossal nerves in 10 patients with HMSN type I (HMSN I), 2 patients with HMSN Type II (HMSN II), and 20 normal controls were determined. The extra- and intracranial segments of the cranial nerves were stimulated electrically and magnetically, respectively.

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Background And Purpose: Asymptomatic microbleeds shown by T2*-weighted MR imaging are associated with small-artery diseases, especially with intracerebral hemorrhage. Few studies have focused on the prevalence of microbleeds in patients with recurrent stroke. We investigated frequency of microbleeds in patients with recurrent stroke and association of presence of microbleeds with a combination of stroke subtypes and severity of leukoaraiosis.

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Several studies have demonstrated abnormal MRI findings in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), especially hypertrophy and abnormal enhancement of spinal nerve roots, but there have been few reports on ultrasonographic findings of spinal nerve roots in CIDP. To determine whether ultrasonography (US) enables detection of hypertrophy of the cervical nerve roots, how frequently hypertrophy occurs in CIDP, and whether US findings correlate with any clinical and laboratory features, US of cervical nerve roots was performed using a 7.5-MHz linear-array transducer in 13 CIDP patients and 35 control subjects.

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Worldwide energetic efforts have provided several clues for the management of Alzheimer's disease and related dementias in elderly people, although the history of dementia treatment is not long. Various pharmacological or non-pharmacological treatments are carried out in daily medical practice, but evidence for the validity of these treatments is limited. In United States and Europe, several pharmacological and a few non-pharmacological treatments have been proven effective and a few drugs are approved by various governments and used in practice.

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Various factors have been suggested to participate in Alzheimer's disease (AD) pathology, and some inflammatory cytokines may play an important role in the development of AD. Interferon-gamma (IFNG), an important pro-inflammatory cytokine, is encoded by a single gene mapped to chromosome 12, one of the candidate locus of AD. The first intron in the IFNG gene represents a CA repeat polymorphism that is possible to affect the IFNG secretion dose.

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We report a consensus statement of the collaborative research group on the prevention and treatment of malignant syndrome (MS) in Parkinson's disease. The syndrome is quite similar to neuroleptic MS. Although sudden withdrawal of levodopa was the most frequent cause, many other precipitating events were found such as intercurrent infections, dehydration, hot weather, discontinuation of other anti-parkinsonian drugs, and "wearing off" phenomenon.

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We report the results of a collaborative study on malignant syndrome (MS) that developed in patients being treated with levodopa and other anti-parkinsonian drugs. We analyzed clinical features, laboratory findings, precipitating events, and risk factors for poor outcome. The study was conducted in five centers in Japan.

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Introduction: We elucidated the cause and clinical characteristics of malignant syndrome (MS) in patients with Parkinson's disease (PD), early-onset parkinsonism (EOP), and other neurological disorders.

Materials And Methods: Subjects were 260 patients with PD or EOP, and three patients with other neurological disorders associated with MS. We studied clinical symptoms before and after the onset of MS, and evaluated autonomic function particularly before the onset of MS.

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Chronic inflammatory demyelinating polyneuropathy (CIDP) is a slowly progressive or recurrent neuropathy accompanied by infiltration of macrophages in the peripheral nerves. Macrophage colony-stimulating factor (M-CSF) and monocyte chemoattractant protein-1 (MCP-1) are a macrophage-related cytokine and chemokine, respectively. Although, intravenous immunoglobulin (IVIg) infusion therapy has been used for treating CIDP patients, not all CIDP patients have responded to IVIg infusion therapy.

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We analyzed the SCA8 CTA/CTG repeat in a large group of Japanese subjects. The frequency of large alleles (85-399 CTA/CTG repeats) was 1.9% in spinocerebellar ataxia (SCA), 0.

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