A Case Report: Hemorrhagic Venous Infarction after Deep Brain Stimulation Surgery Probably Due to Coagulation of Intradural Veins.

Hemorrhagic venous infarction secondary to deep brain stimulation (DBS) surgery occurs rarely and can cause delayed intracranial hemorrhage. Venous cerebral infarction after DBS surgery is commonly caused by coagulation of the superficial cerebral veins, which usually produces transient symptoms but leaves no permanent sequelae. We report a case of hemorrhagic venous infarction resulting in severe sequelae, likely due to coagulation of the lateral venous lacuna during DBS surgery.

Communicating Syringomyelia.

Background: Communicating syringomyelia can develop in association with hydrocephalus, with communication between syringomyelia and the fourth ventricle a representative neuroimaging finding.

Case Description: A 51-year-old woman presented with slowly progressive bladder dysfunction and scoliosis. She had a nonfunctioning cerebrospinal fluid shunt that had been placed after birth for neonatal hydrocephalus.

Functional connectivity analysis and prediction of cognitive change after carotid artery stenting.

Objective: The neurocognitive course of patients who have undergone cerebral revascularization has been the subject of many studies, and the reported effects of carotid artery stenting (CAS) on cognitive function have varied from study to study. The authors hypothesized that cognitive amelioration after CAS is associated with alteration of the default mode network (DMN) connectivity, and they investigated the correlation between functional connectivity (FC) of the DMN and post-CAS changes in cognitive function in order to find a clinical marker that can be used to predict the effect of cerebral revascularization on patients' cognitive function in this preliminary exploratory study.

Methods: The authors examined post-CAS changes in cognitive function in relation to FC in patients treated for unilateral carotid artery stenosis.

[Percutaneous transluminal angioplasty using a stent for an aberrant left subclavian artery stenosis with a right-sided aortic arch: a case report].

An aberrant left subclavian artery is a rare variant that has been reported to coexist with the right-sided aortic arch in many cases. We encountered a case in which percutaneous transluminal angioplasty using a stent was performed for an aberrant left subclavian artery and left carotid artery. The patient was a 63-year-old man in whom left carotid artery stenosis and abnormal flow pattern of the left vertebral artery was accidently found during an ultrasound screening of his carotid artery.

[Reversible hepatic myelopathy: a case report].

We report a case of reversible hepatic myelopathy. A 42-year-old female patient with 3-year history of alcoholic liver cirrhosis developed spastic gait, hyperreflexia and mild somatosensory disturbance in her lower extremities. The increased level of serum ammonia and the deficits of N30 and P38 in the tibial somatosensory evoked potentials (SEP) in conjunction with exclusion of the other known causes of myelopathy supported the diagnosis of her hepatic myelopathy.