Publications by authors named "Hosokawa K"

Introduction Effective communication is crucial for healthcare professionals, impacting patient care and interdisciplinary collaboration. However, medical education often lacks structured training in communication and presentation techniques. Herein, we evaluate the efficacy of structured workshops aimed at enhancing presentation skills among ear, nose, and throat (ENT) doctors through training in visual material design and concise verbal communication, including elevator pitches.

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Advances in chronic thromboembolic pulmonary hypertension (CTEPH) treatment have improved prognosis, shifting focus towards symptom management. This study aimed to identify factors influencing the World Health Organization functional class (WHO-FC) in CTEPH patients. The CTEPH AC registry is a prospective, multicenter database from 35 Japanese institutions, analyzing data from August 2018 to July 2023.

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Purpose: Chemoradiotherapy (CRT) for head and neck cancer (HNC) often causes dysphagia. The risk of dysphagia increases during CRT tends to become more severe after finishing CRT, and persists for a few weeks thereafter. Thus, understanding the changes in swallowing physiology during and immediately after CRT is essential.

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The fundamental frequency (fo) is pivotal for quantifying vocal-fold characteristics. However, the accuracy of fo estimation in hoarse voices is notably low, and no definitive algorithm for fo estimation has been previously established. In this study, we introduce an algorithm named, "Spectral-based fo Estimator Emphasized by Domination and Sequence (SFEEDS)," which enhances the spectrum method and conducted comparative analyses with conventional estimation methods.

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We present the case of a 54-year-old woman who was diagnosed with intraductal papillary neoplasm of the bile duct (IPNB) in the remnant intrapancreatic bile duct, 37 years after surgery for congenital biliary dilatation. Endoscopic ultrasonography revealed a papillary, low-echoic mass in the intrapancreatic bile duct, and peroral cholangioscopy revealed a papillary mucosa. A pancreaticoduodenectomy was performed, and the patient was pathologically diagnosed with type 1 pancreatobiliary-type IPNB with associated invasive carcinoma.

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Background: Quality indicators (QIs) are used to standardize care and improve outcomes in patients with pulmonary arterial hypertension (PAH). It is important that QIs are validated within specific healthcare contexts. Therefore, this study aimed to validate QIs for PAH management in Japan using a modified Delphi consensus method.

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Digital PCR (dPCR) enables absolute quantitation of nucleic acid without calibration using a standard curve, and is promising for quantitation of SARS-CoV-2 viral load. However, dPCR suffers from the need for complicated and expensive instruments. We previously reported a dPCR system using a poly(dimethylsiloxane) (PDMS) microwell array (MWA) chip and common laboratory tools.

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Because more than a few patients have intraductal papillary mucinous neoplasms of the pancreas (IPMNs) with mural nodules (MNs) that are benign, clinical plans should be determined by using histocytological specimens especially, for patients with high risk for surgery or with a small MN. This study included 27 patients to evaluate the efficacy of peroral pancreatoscopy using a SpyGlass DS system (POPS-DS) for patients with MN-positive IPMN, mainly focusing on the ability of POPS-DS to detect malignancy. Biopsy specimens obtained under POPS-DS guidance could be used for histological evaluation of all patients with MNs in the main pancreatic duct and 67% of the patients with MNs in the branch ducts, whereas fluid specimens collected during POPS-DS could be used for histocytological evaluation for all patients.

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Immune checkpoint inhibitors (ICIs) are pharmacological agents indicated for recurrent and metastatic head and neck squamous cell carcinoma (HNCSCC). Immune-related adverse events (irAEs) have been reported as predictors of therapeutic response to ICIs. However, previous studies have not adequately addressed the immortal time bias.

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The advent of immune checkpoint inhibitors (ICIs) has significantly improved cancer treatment. With the increasing use of ICIs, ICI-related myocarditis has been recognized. However, an evidence-based therapeutic strategy has not been established because of the limited knowledge on ICI-related myocarditis.

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Article Synopsis
  • * Acquired aplastic anemia is mainly driven by an autoimmune response where T cells attack hematopoietic stem cells, often accompanied by genomic changes like mutations in key genes (PIGA, DNMT3A, etc.).
  • * Recent research reveals that abnormalities in T cells and the presence of certain cell types that escape autoimmune attacks are crucial in understanding the immune mechanisms behind bone marrow failure.
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  • The translocator protein 18 kDa (TSPO) is implicated in inflammation, oxidative stress, and steroid production, and it may serve as a marker for inflammatory responses, particularly in the brain and other organs.
  • This study analyzed plasma TSPO concentrations in patients with sepsis compared to healthy controls, finding that sepsis patients had significantly lower TSPO levels (0.094 ng/mL vs 0.25 ng/mL).
  • Receiver operating characteristic analysis indicated that plasma TSPO may be a promising biomarker for diagnosing sepsis, with an area under the curve of 0.81; however, TSPO concentration did not correlate with the severity or prognosis of the disease.
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Background: The management of chronic thromboembolic pulmonary hypertension (CTEPH) has advanced significantly in recent years, thereby improving patient prognosis. However, the impact of cancer on the outcomes of patients with CTEPH under current treatment remains unclear. This study aimed to investigate the prevalence of cancer in patients with CTEPH and determine how comorbid cancer affects their prognosis and clinical course.

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  • Head and neck small-cell carcinoma (HNSmCC) is a rare but aggressive cancer that tends to spread and is typically treated with chemotherapy and sometimes surgery.
  • This study investigated whether adding surgery to chemoradiation therapy (CRT) would enhance survival rates among patients with locoregional HNSmCC, using a matched analysis of patient data.
  • The findings showed no significant improvement in overall survival or disease-specific survival rates for patients who underwent surgery compared to those who only received CRT.
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Chronic rhinosinusitis (CRS) is a persistent inflammatory disease affecting the nasal and paranasal sinus tissues, classified into two main categories: one associated with nasal polyps (CRSwNP) and one without them (CRSsNP). A particular form of CRSwNP, known as eosinophilic CRS (ECRS), is distinguished by the excessive presence of eosinophils in the affected tissues. While surgical intervention and corticosteroids are the standard treatments, high relapse rates have led to increasing interest in biological treatments.

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  • Efficiently addressing combinatorial optimization problems like Max-Cut is tough due to exponential growth in resource demands with larger problem sizes.
  • This study introduces a method using a spiking neural network (SNN)-based Boltzmann machine (BM) on neuromorphic hardware, featuring innovative algorithms and simulations that show high accuracy for large-scale Max-Cut problems.
  • The method has been validated on a neuromorphic chip with phase change memory, marking a significant step as the first known implementation of using SNNs to tackle the Max-Cut problem effectively.
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Purpose: This study aimed to assess the diagnostic performance of dynamic chest radiography (DCR) and investigate its added value to chest radiography (CR) in detecting pulmonary embolism (PE).

Methods: Of 775 patients who underwent CR and DCR in our hospital between June 2020 and August 2022, individuals who also underwent contrast-enhanced CT (CECT) of the chest within 72 h were included in this study. PE or non-PE diagnosis was confirmed by CECT and the subsequent clinical course.

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Neuroendocrine carcinomas (NECs) are rare and highly malignant tumors with a generally poor prognosis. Carcinoembryonic antigen (CEA) is often associated with adenocarcinoma, but its significant elevation in NEC cases is unusual. A 69-year-old man was admitted to our hospital in January 2016 due to syncope induced by anemia.

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Objectives/hypothesis: To determine the presence of sex differences in difficult laryngeal exposure and the Laryngoscore, validate the Laryngoscore, mini-Laryngoscore, and Clarysse's model for predicting difficult laryngeal exposure, and modify the Laryngoscore for improved prediction accuracy.

Study Design: Retrospective study.

Methods: This study included 153 patients who underwent laryngeal microsurgery at a tertiary laryngology center and university hospital.

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Objective: Cortical spreading depolarization is one possible pathogenesis of migraine, of which slow neurophysiological change is barely recorded in conventional EEG settings. Using wide-band EEG conditions, we reappraised the features of EEG in migraineurs, including subdelta-band EEG changes.

Methods: This retrospective study included 144 patients with migraine.

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Objective: Dysphagia is a common complication associated with cardiovascular surgery (CVS). This study sought to better understand recovery timelines, identify risk factors, and create a prognostic model for oral intake restoration.

Methods: This retrospective study included 134 patients who had CVS between April 2022 and March 2024.

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Background: The contemporary outcome of balloon pulmonary angioplasty (BPA) and pulmonary endarterectomy (PEA) in patients with chronic thromboembolic pulmonary hypertension (CTEPH) are unclear.

Objectives: This study aimed to clarify the characteristics and outcomes of CTEPH patients treated with BPA and PEA in Japan.

Methods: Among 1,270 participants enrolled between 2018 and 2023 in the CTEPH AC (Chronic Thromboembolic Pulmonary Hypertension Anticoagulant) registry, a Japanese nationwide CTEPH registry, 369 treatment-naive patients (BPA strategy: n = 313; PEA strategy: n = 56) and 690 on-treatment patients (BPA strategy: n = 561; PEA strategy: n = 129) were classified according to the presence of prior reperfusion therapy.

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Background And Aims: Respiratory system compliance (Crs) is a simple indicator of lung flexibility. However, it remains unclear whether a low Crs during anesthesia induction (iCrs) is associated with an increased risk of postoperative mechanical ventilation.

Methods: This retrospective observational study was conducted using a local database.

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