Hiromasa Kobayashi
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View article: Applicability of Fatigue Crack Detection with Infrared Thermography Camera for Bridges in Denmark
Applicability of Fatigue Crack Detection with Infrared Thermography Camera for Bridges in Denmark Open
View article: The “One Coin Bypass” Technique as a Minimally Invasive Navigation-Guided Superficial Temporal Artery to Middle Cerebral Artery Bypass
The “One Coin Bypass” Technique as a Minimally Invasive Navigation-Guided Superficial Temporal Artery to Middle Cerebral Artery Bypass Open
The OCB was shown to be a safe and effective minimally invasive alternative to conventional STA-MCA bypass, offering reduced surgical exposure without compromising bypass quality. It may be especially advantageous in elderly or high-risk p…
View article: Experience of 4 Cases of Successful Surgery in Common Peroneal Neuropathy after Posterior Lumbar Decompression Surgery
Experience of 4 Cases of Successful Surgery in Common Peroneal Neuropathy after Posterior Lumbar Decompression Surgery Open
View article: Well-developed cutaneous feeder compression using a circular plastic disc and a rubber band for embolization of non-sinus type parasagittal dural arteriovenous fistula
Well-developed cutaneous feeder compression using a circular plastic disc and a rubber band for embolization of non-sinus type parasagittal dural arteriovenous fistula Open
Background Non-sinus type parasagittal dural arteriovenous fistula (DAVF) is associated with a high incidence of cortical venous reflux and is susceptible to the development of progressive symptoms, including venous infarction and cerebral…
View article: Growing teratoma syndrome arising from malignant mixed germ cell tumor: Case report and review of literature
Growing teratoma syndrome arising from malignant mixed germ cell tumor: Case report and review of literature Open
View article: A Case of Intracranial Mesenchymal Tumor, FET::CREB Fusion-positive, Diagnosed by Genomic Profiling with FoundationOne CDx
A Case of Intracranial Mesenchymal Tumor, FET::CREB Fusion-positive, Diagnosed by Genomic Profiling with FoundationOne CDx Open
Intracranial mesenchymal tumor FET::cyclic adenosine monophosphate response element-binding fusion-positive is a soft tissue tumor with an extremely rare intracranial occurrence. Histological diagnosis is sometimes difficult, requiring con…
View article: Treatment Strategy for Symptomatic Internal Carotid Artery Stenosis with Persistent Primitive Hypoglossal Artery
Treatment Strategy for Symptomatic Internal Carotid Artery Stenosis with Persistent Primitive Hypoglossal Artery Open
View article: The Utility of Preoperative CT Angiography for Middle Meningeal Artery Embolization in Acute Epidural Hematoma
The Utility of Preoperative CT Angiography for Middle Meningeal Artery Embolization in Acute Epidural Hematoma Open
CTA for acute epidural hematoma without neurological symptoms is a useful diagnostic tool that can identify patients at high risk for hematoma expansion. If the findings indicate the need for intervention, MMA embolization is a treatment o…
View article: Two Cases of Flow Diverter Placement for Early Recurrence Following Stent-Assisted Coil Embolization for Ruptured Dissecting Cerebral Aneurysms
Two Cases of Flow Diverter Placement for Early Recurrence Following Stent-Assisted Coil Embolization for Ruptured Dissecting Cerebral Aneurysms Open
To date, few studies on stepwise treatment with SAC and FD for refractory ruptured cerebral aneurysms, such as VADA and BBA of the ICA, have been reported. In addition to the cases reported, we also reviewed previous articles on treatment …
View article: Embolization of Posterior Fossa Meningiomas Supplied with Meningohypophyseal Trunk by Using<i>n</i>-BCA and Dual Balloon Protection
Embolization of Posterior Fossa Meningiomas Supplied with Meningohypophyseal Trunk by Using<i>n</i>-BCA and Dual Balloon Protection Open
The MHT embolization of posterior fossa meningiomas by using n-BCA is technically feasible with a high success rate and an acceptable complication rate.
View article: Surgical Concepts and Long-term Outcomes of Thalamic Deep Brain Stimulation in Patients with Severe Tourette Syndrome: A Single-center Experience
Surgical Concepts and Long-term Outcomes of Thalamic Deep Brain Stimulation in Patients with Severe Tourette Syndrome: A Single-center Experience Open
Tourette syndrome (TS) is a developmental neuropsychiatric disorder that is characterized by tic movements. Deep brain stimulation (DBS) may be a treatment option for severe cases refractory to medical and behavioral therapies. In this stu…
View article: Asymptomatic cable twisting in a patient with impending Twiddler syndrome detected during deep brain stimulation surgery for Parkinson’s disease: A case report
Asymptomatic cable twisting in a patient with impending Twiddler syndrome detected during deep brain stimulation surgery for Parkinson’s disease: A case report Open
Background: Deep brain stimulation (DBS) has consistently demonstrated high efficacy and safety in patients with Parkinson’s disease. Twiddler’s syndrome is a rare occurrence of hardware failure in patients undergoing neuromodulation. We r…
View article: Tremor Rebound Due to a Deep Brain Stimulation Electrode Fracture with Normal Impedance Treated by Rescue Thalamotomy in a Patient with Essential Tremor: A Case Report
Tremor Rebound Due to a Deep Brain Stimulation Electrode Fracture with Normal Impedance Treated by Rescue Thalamotomy in a Patient with Essential Tremor: A Case Report Open
Background: Deep brain stimulation (DBS) has been shown to be an effective treatment for essential tremor and other movement disorders. However, hardware-related complications have limited its efficacy. Lead fracture in DBS typically occur…
View article: Successful endovascular treatment of a ruptured saccular aneurysm arising from a fenestrated proximal anterior cerebral artery
Successful endovascular treatment of a ruptured saccular aneurysm arising from a fenestrated proximal anterior cerebral artery Open
Aneurysms arising from fenestrated proximal anterior cerebral arteries are rare. Previous studies primarily reported performing clipping. In contrast, endovascular treatment is rarely selected. In this report, we present a case of coil emb…
View article: A Case of Cervical Hemangioblastoma with Prominent Medullary Symptoms Due to Syringobulbia
A Case of Cervical Hemangioblastoma with Prominent Medullary Symptoms Due to Syringobulbia Open
View article: Case Reports: Two Different Onset Types of Chronic Encapsulated Intracerebral Hematoma related to cerebrospinal fluid perfusion identified prior to and following surgery
Case Reports: Two Different Onset Types of Chronic Encapsulated Intracerebral Hematoma related to cerebrospinal fluid perfusion identified prior to and following surgery Open
Hypertensive intracerebral hemorrhage rarely develops into chronic encapsulated intracerebral hematoma (CEIH). We encountered 2 cases of CEIH, one with initial CEIH and the other with CEIH following minimally invasive endoscopic surgery fo…
View article: Disappearance of a moyamoya-related distal anterior cerebral artery aneurysm after target bypass revascularization: illustrative case
Disappearance of a moyamoya-related distal anterior cerebral artery aneurysm after target bypass revascularization: illustrative case Open
BACKGROUND Aneurysm formation is a complication of moyamoya disease (MMD). Distal anterior cerebral artery (ACA) aneurysms account for approximately 1% of MMD-related aneurysms. We report a case of target bypass for adult patients with MMD…
View article: Presence of intra-aneurysmal thrombi with delayed coil migration after embolization of an aneurysmal subarachnoid hemorrhage: illustrative case
Presence of intra-aneurysmal thrombi with delayed coil migration after embolization of an aneurysmal subarachnoid hemorrhage: illustrative case Open
BACKGROUND Coil migration is a rare, but notable complication of endovascular treatment. Risk factors include communicating segment aneurysms, aneurysmal shape, and technical factors. Although cerebral blood flow obstruction caused by earl…
View article: Repeated coil embolization of traumatic basilar artery pseudoaneurysm accompanied by bilateral traumatic internal carotid artery stenosis following severe head injury in a pediatric patient: A case report and literature review
Repeated coil embolization of traumatic basilar artery pseudoaneurysm accompanied by bilateral traumatic internal carotid artery stenosis following severe head injury in a pediatric patient: A case report and literature review Open
Background: Few cases of pediatric traumatic intracranial aneurysms (pTICAs) in the posterior circulation involving the basilar artery (BA) following severe head trauma have been reported. Here, we describe a pediatric case of traumatic BA…
View article: Unique trajectory of transorbital penetration injury determined by the orbital bone anatomy resulting in the minimum neurological deficit: A case report
Unique trajectory of transorbital penetration injury determined by the orbital bone anatomy resulting in the minimum neurological deficit: A case report Open
Background: Transorbital penetration injury may lead to severe neurological symptoms due to damage of critical neurovascular structures around penetration paths. We report a rare transorbital penetration injury case where the trajectory of…
View article: Manual superficial temporal artery compression using a circular plastic material for embolization of meningioma: illustrative case
Manual superficial temporal artery compression using a circular plastic material for embolization of meningioma: illustrative case Open
BACKGROUND In meningiomas that occur in the high-convexity region, the superficial temporal artery (STA) frequently feeds the tumor, and when embolizing from the middle meningeal artery (MMA), the embolic material may not reach the tumor v…
View article: Microsurgical Anatomy and Surgical Consideration of the Middle Cranial Fossa and Infratemporal Fossa
Microsurgical Anatomy and Surgical Consideration of the Middle Cranial Fossa and Infratemporal Fossa Open
中頭蓋窩や側頭下窩は, pterional approach, subtemporal approach, zygomatic approach, transpetrosal approachなどの多くの手術approachに関与している. 周囲構造物である海綿静脈洞, 蝶形骨洞, 翼口蓋窩, 下眼窩裂, 眼窩などとの関係性を含めて理解することは, 安全確実な手術を行うことと, 病変の進展形式や病態生理を理解するうえでも重要である. 本領域の手術に関する微小外科解剖を概説す…
View article: Clinical Features and Surgical Management of Aneurysms at the Proximal Segment (A1) of the Anterior Cerebral Artery
Clinical Features and Surgical Management of Aneurysms at the Proximal Segment (A1) of the Anterior Cerebral Artery Open
前大脳動脈近位部（A1）動脈瘤はまれな疾患で全脳動脈瘤の1-2％の頻度と報告され，多くは穿通枝分岐部に発生するため治療の難易度は高い．今回，当院で施行した10例のA1動脈瘤について後方視的に検討を行い，臨床的特徴とさまざまな形態による治療戦略に関して報告する．当院で治療を行った脳動脈瘤症例1,520例を対象とし，A1動脈瘤は10例（0.6％）であった．9例が未破裂，1例が破裂脳動脈瘤で，発生位置はA1上のdistal 6例，proximal 3例，middle 1例であった…
View article: Massive Epistaxis Due to ICA Pseudo-aneurysm 30 Years after Trans-sphenoidal Surgery: A Case Report and Literature Review
Massive Epistaxis Due to ICA Pseudo-aneurysm 30 Years after Trans-sphenoidal Surgery: A Case Report and Literature Review Open
症例は60歳の男性．30年前に下垂体腫瘍に対して経蝶形骨洞的腫瘍摘出術が行われ，術中大量出血をきたした．今回，突然の大量鼻出血により，貧血となり当院に搬送となった．蝶形骨洞後壁の骨窓より内頚動脈C3部の小動脈瘤が露出しており，出血源と考えられた．その後，バイパス併用母血管閉塞術を行い，経過は良好である．経蝶形骨洞術後の内頚動脈損傷および遅発性仮性動脈瘤形成は非常に重篤な合併症である．文献的考察を交えて報告する．
View article: Case report: Radiofrequency thalamotomy as palliative care for Holmes tremor in a patient with terminal cancer and cardiac pacemaker
Case report: Radiofrequency thalamotomy as palliative care for Holmes tremor in a patient with terminal cancer and cardiac pacemaker Open
Background: Herein, we present a case report of a patient with Holmes tremor due to thalamic infarction with end-stage pancreatic cancer who underwent successful computed tomography (CT)-guided ventralis intermedius nucleus (Vim) thalamoto…
View article: Favorable management of symptomatic cerebellar hemangioblastoma presenting with obstructive hydrocephalus during pregnancy: A case report and literature review
Favorable management of symptomatic cerebellar hemangioblastoma presenting with obstructive hydrocephalus during pregnancy: A case report and literature review Open
Background: Cerebellar hemangioblastoma is a highly vascular benign tumor and the growth rate of hemangioblastomas is believed to often accelerate during pregnancy; however, the reason for this rapid increase in size remains poorly underst…
View article: A Case of an Intraosseous Schwannoma Originating from the Thoracic Lamina
A Case of an Intraosseous Schwannoma Originating from the Thoracic Lamina Open
Intraosseous schwannomas are rare, accounting for only 0.2% of primary bone tumors, of which schwannomas located in the cervical, thoracic, and lumbar spine are even more uncommon. Schwannomas are rarely located in the posterior column of …
View article: Enlargement of preexisting superficial temporal artery pseudo-aneurysm co-incidental to mask wearing during the Covid-19 pandemic
Enlargement of preexisting superficial temporal artery pseudo-aneurysm co-incidental to mask wearing during the Covid-19 pandemic Open
View article: PD-1 Inhibitor Nivolumab for a Primary Central Nerve System Melanoma Developing Spinal Cord Symptom : A Case Report
PD-1 Inhibitor Nivolumab for a Primary Central Nerve System Melanoma Developing Spinal Cord Symptom : A Case Report Open
Primary central nervous system melanoma (PCNM) is a rare condition ; however, a PCNM localized to the spinal cord is even rarer. PCNM management is particularly controversial, with no clear guidelines.
View article: Clinicopathological and genetic characteristics associated with brain metastases from lung adenocarcinoma and utility as prognostic factors
Clinicopathological and genetic characteristics associated with brain metastases from lung adenocarcinoma and utility as prognostic factors Open
Brain metastases (BM) are common in patients with lung adenocarcinoma, and represent a significant cause of morbidity in the disease. A more comprehensive understanding of the clinicopathological characteristics that serve as prognostic fa…