Publications by authors named "Kidani T"

Traumatic pseudoaneurysms of the middle meningeal artery (MMA) are rare and have a poor prognosis due to their high risk of rupture. This study presents a case of a 53-year-old man who experienced rupture of an MMA pseudoaneurysm 10 days after craniotomy for an acute subdural hematoma caused by a blunt head injury. He also had an accompanying temporal bone fracture extending to the skull base.

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  • * Patients using anti-TNF-α treatments, like adalimumab, often experience paradoxical skin reactions (PSRs), such as rashes and hair loss, necessitating a switch to alternative treatments.
  • * Guselkumab, an anti-IL-23 treatment, not only avoids PSRs but also effectively manages PPP/PAO, and it is suggested as a preferable option over adalimumab for patients dealing with these conditions.
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Objective: Treatment of anterior choroidal artery (AChA) aneurysms is frequently associated with ischemic complications. This study aimed to report the outcomes of treatment of unruptured AChA aneurysms in our hospital.

Methods: Between January 2015 and March 2022, 40 patients were treated for an unruptured AChA aneurysm in our hospital.

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  • The study investigates genetic factors related to meningiomas, a common type of brain tumor, specifically in a Japanese population, as previous research mainly focused on Europeans.
  • Researchers analyzed 401 meningioma patients and over 50,000 control participants, ultimately identifying over 8 million genetic variants but failing to find any significant variants associated with meningioma susceptibility.
  • This first genome-wide association study on meningiomas in East Asians aims to enrich future genetic research in this area, despite not yielding significant results.
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There is a lack of data regarding the safety and effectiveness of implanting the Pipeline Embolization Device with Shield technology (PED-Shield) compared with the previous generation of Pipeline (PED-Flex). This retrospective single-center study aimed to compare treatment outcomes between the PED-Shield and PED-Flex for treating unruptured internal carotid artery aneurysms. The PED-Flex was used in 62 procedures (67 aneurysms, 59 patients) and the PED-Shield in 53 procedures (59 aneurysms, 58 patients).

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Background: Extracranial internal carotid artery (ICA)-dissecting aneurysms (DAs) rarely cause re-entry tears and lower cranial nerve palsies. The therapeutic strategies for these pathologies are not well established. This report presents a case of an extracranial ICA -DA with a re-entry tear that caused lower cranial nerve palsy.

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Objective: The risk factors of procedural cerebral ischemia (CI) in ruptured middle cerebral artery (MCA) aneurysms are unclear. This study proposed the neck-branching angle (NBA), a simple quantitative indicator of the aneurysm neck and branch vessels, and analyzed its usefulness as a predictor of procedural CI in ruptured MCA aneurysms.

Methods: We retrospectively analyzed 128 patients with ruptured saccular MCA aneurysms who underwent surgical or endovascular treatment between January 2014 and June 2021.

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  • Intracranial infectious aneurysms (IIAs) are very rare, and the case discussed is about an 81-year-old woman with a fungal infection causing an unruptured aneurysm in her brain.
  • After some treatments and monitoring, her aneurysm grew in size, leading doctors to place a special type of stent to help fix it.
  • The woman improved after the stent was put in, but doctors stressed the importance of treating the infection first to prevent future problems.
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Objective: Traumatic middle meningeal artery (MMA)-middle meningeal vein (MMV) fistula (MMA-MMV fistula) and MMA pseudoaneurysm are the 2 main MMA-related vascular diseases occurring after blunt head trauma. These are rare but known causes of delayed intracranial hemorrhage. This study investigated predictors that may aid in the diagnosis of these diseases.

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  • Tumor-devitalized autografts are biological reconstruction methods used after tumor excision in aggressive bone or soft tissue tumors, providing benefits like no disease transmission risk and better fit for the implant site, but they also have limitations including reduced healing potential and biomechanical strength.
  • The study aimed to investigate rates of complications (like fracture and infection), 5-year and 10-year graft survival, union rates of the graft-host junction, and overall limb function related to these autografts.
  • Conducted as a retrospective study across 26 sarcoma centers in Japan, the research analyzed data from 494 patients over a 25-year period, focusing on the outcomes and factors affecting the effectiveness of these treatments.
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Flow diverter (FD) stenting is expected to improve cranial nerve symptoms caused by aneurysms via the theoretical reduction of the mass effect by promoting spontaneous thrombosis through the flow diversion effect. However, the factors involved in symptom improvement after treatment remain unclear. This study was performed to identify factors for symptom improvement after FD stenting and the symptom improvement rate of each impaired cranial nerve.

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Background: Both filum terminale arteriovenous fistulas (FTAVFs) and filum terminale lipomas (FTLs) are rare. Because of this rarity, there is a paucity of data regarding concomitant FTAVF and FTL, and the optimal treatment remains to be defined. The authors describe a patient with coexisting FTAVF and FTL treated with single-stage surgery.

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Background: Psoriatic arthritis treatment with antitumor necrosis factor has been shown to reduce disease activity. Nonetheless, more than 30% of patients do not achieve a sufficient response to tumor necrosis factor blockers. Currently, treatment with interleukin-6 inhibitors is expected to be effective and suppress the joint destruction in patients with psoriatic arthritis; however, evidence regarding their efficacy is limited to a few reports.

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Background: Evidence supports endovascular coiling for ruptured intracranial aneurysms (RIAs). However, in some cases, it is difficult to achieve complete occlusion by coiling, such as with wide-neck aneurysms. We report our experience with intentional staged RIA treatment using targeted endovascular coiling at the rupture point in the acute phase, followed by delayed stent-assisted coiling, flow diverter stenting, or surgical clipping.

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Objective: To provide appropriate treatment for patients, early diagnosis of the primary origin of skeletal metastases of unknown primary origin is important. This study aimed to assess the examination strategy effective for identifying the primary origin of skeletal metastases of unknown primary origin.

Methods: Sixty-one patients with skeletal metastases of unknown primary origin were reviewed.

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Background: Data regarding the safety and effectiveness of stent placement in small vessels (<2 mm in diameter) for treating wide-necked cerebral aneurysms are limited.

Objective: To report our experience regarding coil embolization of unruptured cerebral aneurysms using stents (specifically the Neuroform Atlas) in small arteries <2 mm in diameter.

Methods: Patients with unruptured cerebral aneurysms treated with stent-assisted coil embolization between March 2017 and March 2021 in our hospital were included.

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Several studies have reported the prognostic factors for soft tissue sarcoma. Although serum lactate dehydrogenase (LDH) levels are associated with poor prognosis in several types of cancer, their role in soft tissue sarcomas remains unclear. Therefore, the present study evaluated the association between serum LDH levels and the clinical characteristics and prognosis of soft tissue sarcoma.

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Background: Stent infection after carotid artery stenting (CAS) can be a life-threatening postoperative complication, but there is a paucity of data due to its exceedingly low frequency. We report a case of stent infection with pseudoaneurysm formation after CAS that was treated through replacing the infected stent and pseudoaneurysm with a polytetrafluoroethylene (PTFE) synthetic vessel graft.

Case Description: An 86-year-old man was treated for the right internal carotid artery with CAS in local hospital.

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Tension pneumocephalus (TP) can be a life-threatening postoperative complication, but there are limited data owing to its exceedingly low frequency. A 48-year-old man that suffered a head injury survived the acute phase and cranioplasty was performed using a titanium plate. Progressive deterioration of consciousness occurred the day after the cranioplasty.

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Background: Malignant tumors, such as acute leukemia and solid cancers, frequently cause disseminated intravascular coagulation. However, cases of disseminated intravascular coagulation as a complication of bursitis were not reported previously.

Case Presentation: A 72-year-old Japanese woman was scheduled to undergo resection of a rapidly growing subcutaneous tumor-like lesion on her left back.

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Purpose: The spectrum of diagnoses and clinical features of hand tumors differ from those of tumors in other body parts. However, only a few reports have comprehensively referenced the diagnosis and clinical features of hand tumors. This study aimed to elucidate the diagnostic distribution and the clinical features of hand tumors undergone surgery in our institute.

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Musculoskeletal malignancy is often accompanied by aberrant bone remodeling, leading to tumor cell invasion into skeletal tissues and causing severe pain. BMPs, FGF-2, and RANKL have been identified as promising regulators in physiological bone remodeling. In this study, we explored the expressional profile of BMPs, FGF-2, and RANKL in 1361 patients with 22 varieties of musculoskeletal tumors.

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The accurate diagnosis of soft tissue tumors may be difficult. Simple clinical characteristics or laboratory data that can predict tumor malignancy can be useful tools for diagnosing soft tissue tumors. Between 2003 and 2018, 588 patients with primary soft tissue tumors were retrospectively reviewed.

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Background: Synovial sarcoma is a relatively rare type of soft tissue sarcoma. The commonly observed symptom is a deep-seated palpable mass accompanied by pain or tenderness. Thus, it is considered a soft tissue sarcoma and rarely occurs primarily in bone.

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