[Chronic intracerebral hemorrhage in the basal ganglia: Report of two cases and prevalence].

Two patients presented with chronic intracerebral hemorrhage (CIH) in the basal ganglia. A 48-year-old man (Case 1) was admitted to our hospital because of hypertensive right putaminal hemorrhage. On day 14, his hematoma surrounding the edema had grown without re-bleeding as seen on head CT, which was then removed endoscopically on day 28.

[SCA6 presenting parkinsonism without ataxia--A case report].

A 57-year-old man was admitted to our hospital because of bradykinesia. He was diagnosed with Parkinson disease (Hoehn and Yahr grade 2) and administered levodopa at the maximum dose of 800 mg. However, his condition did not improve.

Effects of Meteorological Conditions on the Risk of Ischemic Stroke Events in Patients Treated with Alteplase--HEWS-tPA.

Background: Predicting a day that presents a high risk for the occurrence of ischemic stroke events may enable health professionals to prepare for emergency stroke therapy more properly. We evaluated the association between meteorological conditions and the frequency of ischemic stroke events in Japanese patients.

Methods: Ischemic stroke patients (n = 299) who were treated with alteplase at 9 stroke hospitals in 3 restricted areas were examined.

[Reversible changes on MR images in a patient with metronidazole-induced encephalopathy].

A 66-year-old woman was diagnosed with a brain abscess. The abscess was drained by sterotactic catheter insertion. She was administered metronidazole at a dose of 2 g/day.

[Pneumococcal meningitis with accompanying severe hearing loss: 3D-FLAIR imaging of the inner ear and treatment].

A 66-year-old man was admitted to our hospital because of unconsciousness. He was diagnosed with pneumococcal meningitis and treated with a combination of antibiotics (meropenem hydrate), dexamethasone, and intravenous immunoglobulin. Although he gradually regained consciousness, he started showing signs of hearing disturbance.

Trends in oral anticoagulant choice for acute stroke patients with nonvalvular atrial fibrillation in Japan: the SAMURAI-NVAF study.

Background: Large clinical trials are lack of data on non-vitamin K antagonist oral anticoagulants for acute stroke patients.

Aim: To evaluate the choice of oral anticoagulants at acute hospital discharge in stroke patients with nonvalvular atrial fibrillation and clarify the underlying characteristics potentially affecting that choice using the multicenter Stroke Acute Management with Urgent Risk-factor Assessment and Improvement-NVAF registry (ClinicalTrials.gov NCT01581502).

Hydrophilic-interaction liquid chromatography-tandem mass spectrometric determination of erythrocyte 5-phosphoribosyl 1-pyrophosphate in patients with hypoxanthine-guanine phosphoribosyltransferase deficiency.

Mutations in the gene encoding hypoxanthine-guanine phosphoribosyltransferase (HPRT) cause Lesch-Nyhan disease (LND) and its variants (LNV). Due to the technical problems for measuring the HPRT activity in vitro, discordances between the residual HPRT activity and the clinical severity were found. 5-Phosphoribosyl 1-pyrophosphate (PRPP) is a substrate for HPRT.

Subsequent vascular events after ischemic stroke: the Japan Statin Treatment Against Recurrent Stroke-Longitudinal.

Background: We undertook a multicenter cohort observational study to investigate the frequency and type of subsequent vascular events after an ischemic stroke and to compare the rates of vascular events between patients with and without hyperlipidemia.

Methods: This nationwide study was conducted in 19 hospitals participating in the Japan Standard Stroke Registry Study. We enrolled ischemic stroke patients, including those with a transient ischemic attack, who had not experienced any vascular events before enrollment after their ischemic stroke events.

[Partial deficiency of hypoxanthine-guanine phosphoribosyltransferase presenting seizure and psychomotor retardation: a case report].

An 18-year-old man was admitted to our hospital because of convulsive seizure. He had psychomotor retardation and intellectual disability from childhood, and had been diagnosed with attention deficit-hyperactivity disorder when he was 12 years old. He showed mental deficit (Wechsler Adult Intelligence Scale-Revised: IQ 52) and tendon hyperreflexia without pathological reflexes, but no involuntary movements or self-injurious behavior.

Dynamic stabilization for degenerative spondylolisthesis and lumbar spinal instability.

Lumbar interbody fusion is a widely accepted surgical procedure for patients with lumbar degenerative spondylolisthesis and lumbar spinal instability in the active age group. However, in elderly patients, it is often questionable whether it is truly necessary to construct rigid fixation for a short period of time. In recent years, we have been occasionally performing posterior dynamic stabilization in elderly patients with such lumbar disorders.

[Clinical analyses of recurrence in Guillain-Barré syndrome and Fisher syndrome].

Recurrence of Guillain-Barré syndrome (GBS) and Fisher syndrome (FS) is uncommon. We retrospectively studied the cases of 93 consecutive patients with GBS and FS who were admitted to our hospital between January 2000 and March 2013. We analyzed the clinical features of and anti- glycolipid antibodies in patients who experienced recurrence.

[Anti-amphiphysin antibody-positive paraneoplastic neurological syndrome with a longitudinally extensive spinal cord lesion of the dorsal column].

A 53-year-old woman was admitted to our hospital because of gait disturbance and paresthesia of the lower extremities. She also had marked deep sense impairment in her lower limbs. Cervical MRI showed a longitudinally extensive spinal cord lesion of the dorsal column at levels C1-T11.

[Cerebral venous thrombosis as a complication of nephrotic syndrome--a case report and literature review].

We report two cases of cerebral venous thrombosis as a complication of nephrotic syndrome. No urine protein or kidney disease was noted in either case. The patients were diagnosed with nephrotic syndrome after admission to our hospital.

Safety evaluation of substituting clopidogrel for ticlopidine in Japanese patients with ischemic stroke--Hiroshima ticlopidine, clopidogrel safe exchange trial.

Background: Clopidogrel is sometimes substituted for ticlopidine when cerebrovascular or cardiovascular patients develop hematologic abnormalities after ticlopidine treatment. However, the adverse event rate after the substitution to clopidogrel remains undetermined. Therefore, in this study, we aimed to define the risk of adverse events after substituting clopidogrel for ticlopidine without a washout period.

[Tension pneumocephalus complicated from bacterial meningitis - a report of case presenting "Mount Fuji sign" in brain CT].

A 39-year-old man was suffered from bacterial meningitis spread from sphenoid sinusitis. During the first several days of the hospitalization, his clinical and laboratory findings were improved by the antibiotics. But he developed impaired consciousness and paraparesis on the sixth hospital day.

Arteriovenous fistula in a nerve root of the cauda equina fed by a proximal radiculo-medullary artery: a report of two cases.

While there have been a few reports on cases of intradural spinal arteriovenous fistula located on the filum terminale, no cases of its location in a nerve root of the cauda equina have been reported to date.We describe two such cases and describe the intraoperative findings. A 40-year-old man presented weakness of his left leg.

Intramedullary schwannoma of the conus medullaris complicated by dense adhesion to neural tissue.

A 29-year-old man presented with an intramedullary schwannoma of the conus medullaris manifesting as an 8-month history of mild bladder dysfunction, sexual impotence, and paresthesia in the buttocks. Subtotal removal of the lesion was achieved, as part of the tumor showed dense adhesion to the rostral neural tissue, with only postoperative transient deterioration of bladder dysfunction. Intramedullary schwannoma, especially involving the conus medullaris and the proximal spinal cord, is relatively rare and the pathogenesis and pathophysiology are unclear.

Rapid reduction of syrinx associated with traumatic intracranial hypotension by direct surgery: case report.

A woman in her early twenties presented with cerebellar tonsillar herniation with syrinx in the cervicothoracic spinal cord manifesting as postural headache after suffering trauma to the hip. She was treated under a diagnosis of traumatic intracranial hypotension. Cranial magnetic resonance (MR) imaging demonstrated tonsillar herniation to the upper rim of the C1 lamina, associated with effacement of the basal cisterns and flattening of the pons against the clivus, sagging of the optic chiasm, and protrusion of the pituitary gland into the suprasellar cistern.

[Lacunar infarction in brain tumor patients: chronic stage complication after radiation therapy].

The authors reported two relatively young adults with lacunar infarction that took place many years after radiation therapy. The first case was that of a 41-year-old male presenting with a slight decrease in consciousness and right hemiparesis of sudden occurrence. MRI revealed a lacunar infarction in the left internal capsule.