Surgical Treatment of Traumatic Intracranial Aneurysms: Experiences at a Single Center over 30 Years.

Objective: Traumatic intracranial aneurysm (tIA) is rare and is associated with high rates of morbidity and mortality. We describe our experiences with tIA at our institution.

Methods: We retrospectively reviewed records from patients who underwent treatment for tIA between January 1986 and December 2015.

Correct Plane of the Sylvian Vein Dissection for Middle Cerebral Artery Aneurysm Using Indocyanine Green Videoangiography.

Background: Preservation of the superficial Sylvian veins (SSVs) is essential to prevent neurologic deficits during Sylvian dissection. We describe an appropriate surgical approach for unruptured middle cerebral artery (MCA) aneurysms to preserve these veins by using indocyanine green videoangiography (ICG-VA).

Methods: Between August 2014 and August 2015, we performed microsurgical clipping for 37 unruptured MCA aneurysms in 36 patients.

Traumatic Dural Venous Sinus Injury.

Objective: The importance of traumatic dural venous sinus injury lies in the probability of massive blood loss at the time of trauma or emergency operation resulting in a high mortality rate during the perioperative period. We considered the appropriate methods of treatment that are most essential in the overall management of traumatic dural venous sinus injuries.

Methods: We conducted a retrospective review of all cases involving patients with dural venous sinus injury who presented to our hospital between January 1999 and December 2014.

Brain stem herniation secondary to cerebrospinal fluid drainage in ruptured aneurysm surgery: a case report.

Background: A lumbar drainage catheter is frequently placed intra-operatively to decrease fluid pressure on the brain in aneurysmal subarachnoid cases. In rare cases, this catheter placement can lead to intracranial hypotension, resulting in brain stem herniation termed "brain sag" and it can lead to neurological injury and may prove to be fatal. We present our patient with brain sag secondary to intraoperative lumbar drainage.

Reconstructive Endovascular Treatment of an Intracranial Infectious Aneurysm in Bacterial Meningitis: A Case Report and Review of Literature.

Background: Intracranial infectious aneurysms (IAs) are rare cerebrovascular lesions that represent only 1%-6% of all intracranial aneurysms. IAs are rare cerebrovascular lesions and pose a significant therapeutic challenge because of their angiographic and pathophysiologic features. We describe a patient with an intracranial IA treated by the use of reconstructive endovascular methods using a balloon-expandable covered stent and discuss the pathophysiologic characteristics of IA based on serial brain imaging findings.

Rupture of distal anterior cerebral artery aneurysm presenting only subdural hemorrhage without subarachnoid hemorrhage: a case report.

Intracranial aneurysm rupture usually manifests with subarachnoid hemorrhage, often combined with intracerebral hemorrhage with intraventricular hemorrhage extension. In rare cases, however, these aneurysms present only as subdural hematomas. Recently, we treated a 48-years-old female patient who presented only with subdural hematoma.

Specific and helpful intraoperative indocyanine green videoangiography finding of blood blister-like aneurysm of internal carotid artery.

Background: Blood blister-like aneurysms (BBAs) account for 0.5-2.0 % of ruptured intracranial aneurysms.

Differences in the clinical courses of pediatric and adult pilocytic astrocytomas with progression: a single-institution study.

Purpose: Pilocytic astrocytoma (PA) is a World Health Organization grade I neoplasm that generally follows a benign course. However, in some patients, PA exhibits an aggressive clinical course. Here, we examined the clinical course of pediatric and adult PAs with progression at a single institution.

Pediatric brainstem abscess with hemorrhage mimicking diffuse intrinsic pontine glioma: a case report.

Purpose: We report a rare case of brainstem abscess with hemorrhage mimicking diffuse intrinsic pontine glioma (DIPG).

Methods: A 7-month-old baby girl presented with lethargy and poor oral feeding. She had the mild fever for 1 month.

Rapid clinical course of cerebral metastatic angiosarcoma from the heart.

We report here one case of rapid and aggressive course of cerebral metastatic angiosarcoma from the heart. A 36-year-old man presented with 10-days history of headache. Magnetic resonance imaging demonstrated subacute hemorrhage with a small region of enhancement in right parietal region and the pathological diagnosis was angiosarcoma.

Tailored surgical approaches for benign craniovertebral junction tumors.

Objective: We report our surgical experience in the treatment of 16 consecutive patients with benign craniovertebral junction (CVJ) tumor, observed from 2003 to 2008 at our department.

Methods: We had treated 6 foramen magnum meningiomas, 6 cervicomedullary hemangioblastomas, 1 accessory nerve schwannoma, 1 hypoglossal nerve schwannoma, 1 C2 root schwannoma, and 1 cavernous hemangioma. Clinical results were evaluated by Karnofsky Performance Scale (KPS) and all patients underwent preoperative neuroradiological evaluation with computed tomography (CT) and magnetic resonance image (MRI).

Excitatory actions of GABA in the suprachiasmatic nucleus.

Neurons in the suprachiasmatic nucleus (SCN) are responsible for the generation of circadian oscillations, and understanding how these neurons communicate to form a functional circuit is a critical issue. The neurotransmitter GABA and its receptors are widely expressed in the SCN where they mediate cell-to-cell communication. Previous studies have raised the possibility that GABA can function as an excitatory transmitter in adult SCN neurons during the day, but this work is controversial.