Masahiro Kawanishi
YOU?
Author Swipe
View article: Surgical Resection of a Giant De Novo Cavernous Malformation in the Cerebral Basal Ganglia: Case Report
Surgical Resection of a Giant De Novo Cavernous Malformation in the Cerebral Basal Ganglia: Case Report Open
A 74-year-old woman had a lacunar infarction in the brainstem and was admitted to Takeda General Hospital for treatment. She had significant sequelae and was discharged with a Modified Rankin Scale 0. Imaging follow-up was conducted every …
View article: Ulnar Neuropathy Caused by a Giant Epidermal Cyst at the Elbow: Case Report
Ulnar Neuropathy Caused by a Giant Epidermal Cyst at the Elbow: Case Report Open
Here, we report an unusual case of ulnar neuropathy at the elbow caused by a giant epidermal cyst. A 76-year-old man was assessed on an outpatient basis for ulnar numbness of the left hand that had persisted for 6 months. A soft, elastic s…
View article: Postoperative Airway Management after Anterior Cervical Spine Surgery: Retrospective Neurosurgical Multicenter Study
Postoperative Airway Management after Anterior Cervical Spine Surgery: Retrospective Neurosurgical Multicenter Study Open
Airway complications that occur after anterior cervical spine surgery pose a life-threatening risk, which encompasses complications including prolonged intubation, unplanned reintubation, and/or necessity of tracheostomy. The present study…
View article: A Case of Symptomatic Multiple Tarlov Cysts Treated with Microsurgical Wrapping Technique -Efficacy and Limitation of Surgical Procedure-
A Case of Symptomatic Multiple Tarlov Cysts Treated with Microsurgical Wrapping Technique -Efficacy and Limitation of Surgical Procedure- Open
Tarlov cysts (TCs) rarely cause clinical symptoms, such as leg pain, buttock pain, and bladder/bowel dysfunction. Surgery is considered when these symptoms persist despite medical treatments. Among several surgical procedures, microsurgica…
View article: The Effectiveness of Vertebral Height Restoration Based on the Vertebroplasty Procedure Used to Treat Osteoporotic Vertebral Fractures
The Effectiveness of Vertebral Height Restoration Based on the Vertebroplasty Procedure Used to Treat Osteoporotic Vertebral Fractures Open
Objective: Whether the use of a balloon or stent in vertebroplasty for vertebral fractures, such as balloon kyphoplasty (BKP) or vertebral body stenting (VBS), actually contributes to the restoration of postoperative vertebral height is un…
View article: Treatment for Osteoporotic Vertebral Fracture - A Short Review of Orthosis and Percutaneous Vertebroplasty and Balloon Kyphoplasty
Treatment for Osteoporotic Vertebral Fracture - A Short Review of Orthosis and Percutaneous Vertebroplasty and Balloon Kyphoplasty Open
The management of osteoporotic vertebral fractures (OVFs) in the elderly includes nonoperative treatment and vertebroplasty, but has not been established due to the diversity of patient backgrounds. The purpose of this study was to compare…
View article: History, Current Status, and Emerging Issue of 5-Aminolevulinic Acid Induced Fluorescence Guided Surgery in Neurological Surgery
History, Current Status, and Emerging Issue of 5-Aminolevulinic Acid Induced Fluorescence Guided Surgery in Neurological Surgery Open
悪性脳腫瘍に対する5-アミノレブリン酸(5-Aminolevulinic Acid: 5-ALA)を用いた蛍光ガイド手術は主に励起光源および観察用フィルターを内蔵した顕微鏡を用いて行われてきた.近年,5-ALAによる蛍光観察可能な内視鏡・サージカルルーペさらには外視鏡が登場し,その有用性が示唆されている.しかし,蛍光評価は長年蓄積された顕微鏡下評価を基盤にしており,新たな観察システムによる蛍光評価はこれらと異なる可能性があり注意が必要である.また,新たな蛍光観察システム導入…
View article: Overlapping Musculoskeletal Disorders or Muscle Querying of Spinal Disorders
Overlapping Musculoskeletal Disorders or Muscle Querying of Spinal Disorders Open
View article: Vertebral Fracture in an Elderly Golfer
Vertebral Fracture in an Elderly Golfer Open
View article: Regression of retro-odontoid pseudotumor following botulinum injection into cervical muscles
Regression of retro-odontoid pseudotumor following botulinum injection into cervical muscles Open
Background: Posterior fixation of C1/2 has become more commonly performed to treat retro-odontoid pseudotumor (ROP). Here, we report a 60-year-old female with cervical dystonia (CD), whose ROP regressed and whose quadriparesis improved aft…
View article: A case of nonapoplectic pituitary adenoma presenting with isolated oculomotor nerve palsy
A case of nonapoplectic pituitary adenoma presenting with isolated oculomotor nerve palsy Open
We report a rare case of nonapoplectic pituitary adenoma that did not invade the cavernous sinus and was associated with isolated oculomotor nerve palsy. A 61-year-old male was admitted to our hospital due to diplopia that had gradually wo…
View article: Vascular occlusion in a previously unaffected territory after treatment with intravenous plasminogen activator: illustrative case
Vascular occlusion in a previously unaffected territory after treatment with intravenous plasminogen activator: illustrative case Open
BACKGROUND Intravenous tissue plasminogen activator (IV t-PA) is effective for the treatment of distal artery occlusion. However, after the use of IV t-PA, vascular occlusion in unaffected territories may occur. Early recurrent ischemic st…
View article: Intradural extramedullary hemangioblastoma of the thoracic cord: A case report
Intradural extramedullary hemangioblastoma of the thoracic cord: A case report Open
Background: Spinal hemangioblastomas account for 1–3% of all spinal cord tumors and are mostly intramedullary in location. Here, we report an intradural extramedullary hemangioblastoma of the thoracic spine, occurring in in a patient witho…
View article: Resolution of retro-odontoid cyst in a patient with atlanto-occipital assimilation after occipitocervical fixation
Resolution of retro-odontoid cyst in a patient with atlanto-occipital assimilation after occipitocervical fixation Open
Background: Fusion of the atlas with the lower part of the occiput is clinically known as atlanto-occipital assimilation (AOA) or atlas occipitalization. This can be either partial or complete depending on the extent of fusion. AOA is one …
View article: 転移性脊椎脊髄腫瘍―どう治療する，どこまで治療する？―
転移性脊椎脊髄腫瘍―どう治療する，どこまで治療する？― Open
出 題 症例 1 症例提供 髙見俊宏(大阪医科薬科大学脳神経外科)Fig. 1 a, b) ．肺癌からの脊髄髄内転移(疑い)と診断され，局所放射線治療が 実施された(53 Gy/29 fr) ．さらに，進行性非小細胞癌としてエルロチニブ塩酸塩(epidermal growth factor
View article: A Case of Dural Herniation of the Cauda Equina Caused by Enlarged Spinal Subdural Extra-arachnoid Hygroma Following Lumbar Microsurgical Decompression: Case Report
A Case of Dural Herniation of the Cauda Equina Caused by Enlarged Spinal Subdural Extra-arachnoid Hygroma Following Lumbar Microsurgical Decompression: Case Report Open
We experienced a rare case of transdural herniation of cauda equina caused by increased pressure with spinal subdural extra-arachnoid hygroma (SSEH) following lumbar microsurgical decompression. A 68-year-old woman presented with complaint…
View article: A Case of Multiple Aneurysms Associated with an Accessory Anterior Cerebral Artery
A Case of Multiple Aneurysms Associated with an Accessory Anterior Cerebral Artery Open
Aneurysms involving an accessory anterior cerebral artery (ACA), a vascular anomaly arising from the anterior communicating artery, are extremely rare. We report here a case of multiple ruptured aneurysms involving the accessory ACA, which…
View article: Trends over time in primary disease among incident dialysis patients in Japan: focusing on elderly patients aged≥80 years
Trends over time in primary disease among incident dialysis patients in Japan: focusing on elderly patients aged≥80 years Open
2018年12月の日本透析医学会統計調査委員会の報告によると, 新規透析導入患者数は2015年以降増加傾向となったと報告された. 導入患者の増加には, 人口高齢化の影響が大きい. そこで透析原疾患の経年的推移と高齢者 (80歳以上) の導入時原疾患の特徴を明らかにするため, 過去7年間の日本透析医学会の統計調査 (CD-ROM版) のデータを用い, 年齢3区分別に原疾患別導入患者数の検討を行った. その結果, 20歳から80歳未満の原疾患割合と罹病率 (透析導入率) は, …
View article: A Case of Peripheral Arterial Disease Presenting with Groin Pain after Surgery for Lumbar Canal Stenosis
A Case of Peripheral Arterial Disease Presenting with Groin Pain after Surgery for Lumbar Canal Stenosis Open
Both lumbar canal stenosis (LCS) and peripheral arterial disease (PAD) can cause groin pain. Although differentiating the two pathologies is essential, it can be more challenging in patients with groin pain. We report the case of a 71-year…
View article: A Case of Spontaneous Subarachnoid Hemorrhage Mimicking Distal Posterior Inferior Cerebellar Artery Aneurysm on Computed Tomographic Angiography
A Case of Spontaneous Subarachnoid Hemorrhage Mimicking Distal Posterior Inferior Cerebellar Artery Aneurysm on Computed Tomographic Angiography Open
Although computed tomographic angiography (CTA) is often the only modality for imaging before surgical treatment of intracranial aneurysms, it has some limitations and pitfalls. We report a case of diffuse subarachnoid hemorrhage (SAH) in …
View article: Diagnostic Pitfalls of Pelvic Insufficiency Fractures―A Report of Four Cases―
Diagnostic Pitfalls of Pelvic Insufficiency Fractures―A Report of Four Cases― Open
View article: Surgical Intervention for Osteoporotic Vertebral Fractures
Surgical Intervention for Osteoporotic Vertebral Fractures Open
骨粗鬆症性椎体骨折に対して, 病態に応じた外科的治療について文献的考察を行った. 椎体骨折の疼痛に対する椎体形成術について, 有効性が疑問視される時期もあったが, 最近の無作為比較試験では, 急性期の中等度以上の疼痛に対しては有効性が証明されている. 椎体骨折後, 遅発性に生じる神経障害, 脊椎後弯変形についてさまざまな術式が混在しているが, 神経症状は時機を逸することなく対応すれば改善が見込める. 神経症状の発現に不安定性が関与していることがわかってきており, 除圧なしの…
View article: Delayed Diagnosis of Upper Cervical Spine Injury Presenting with Cardiopulmonary Arrest in Elderly Patients―A Case Report and Review of Literature―
Delayed Diagnosis of Upper Cervical Spine Injury Presenting with Cardiopulmonary Arrest in Elderly Patients―A Case Report and Review of Literature― Open
Although upper cervical spine injury(CSI)is known to cause cardiopulmonary arrest(CPA) , the possibility of significant CSI following minor trauma after CPA is rare.Awareness regarding this condition is important particularly in the elderl…
View article: Spinopelvic Alignment and Sagittal Balance in Asymptomatic Adults with Six Lumbar Vertebrae
Spinopelvic Alignment and Sagittal Balance in Asymptomatic Adults with Six Lumbar Vertebrae Open
View article: Development and Rupture of Very Small (≤3 mm) de novo Internal Carotid-Posterior Communicating Artery Mirror Aneurysms: Two Case Reports
Development and Rupture of Very Small (≤3 mm) de novo Internal Carotid-Posterior Communicating Artery Mirror Aneurysms: Two Case Reports Open
We report two cases of very small (≤3 mm) de novo internal carotid-posterior communicating aneurysms (IC-PC AN) that developed and ruptured within a short period at the mirror site of a previous aneurysm.Case 1: A 75-year-old woman present…
View article: Anterior Transpetrosal Approach for Resection of Ventral Pontine Cavernous Angiomas: A Case Report
Anterior Transpetrosal Approach for Resection of Ventral Pontine Cavernous Angiomas: A Case Report Open
Brainstem cavernous hemangiomas with recurrent bleeding and gradual neurological deterioration should be considered an indication for surgical treatment. However, surgery is challenging for cavernous hemangiomas located in the ventral part…
View article: Cystic dilation of the ventriculus terminalis
Cystic dilation of the ventriculus terminalis Open
The ventriculus terminalis (VT) is a virtual cavity of the conus medullaris that appears during embryonic life. We presented a case with the cystic dilation of the ventriculus terminalis (CDVT) in a symptomatic patient. A 66-year-old femal…
View article: Relationship between atherothrombotic brain infarction or transient ischemic attack and stenotic segment of peripheral arterial disease
Relationship between atherothrombotic brain infarction or transient ischemic attack and stenotic segment of peripheral arterial disease Open
Purpose: Peripheral artery disease (PAD) is known to be related to atherothrombotic brain infarction (ATBI). Atherothrombosis (ATIS) is a complex process wherein thrombus formation occurs via atherosclerosis. This study aimed to investigat…
View article: Two Cases of Microsurgical Clipping of Internal Carotid-Posterior Communicating Artery Aneurysm Located above the Internal Carotid Bifurcation
Two Cases of Microsurgical Clipping of Internal Carotid-Posterior Communicating Artery Aneurysm Located above the Internal Carotid Bifurcation Open