Publications by authors named "Masugi Y"

Purpose: To achieve a historical perspective, the chronological changes in primary liver cancer over a 20-year period were investigated at a single institution, focusing on shifts in etiology and the impact on imaging and pathological findings using The Liver Imaging Reporting and Data System.

Materials And Methods: A retrospective study of surgically resected primary liver cancer in 680 patients from 2001 to 2020 resulted in 434 patients with 482 nodules being analyzed. Dynamic contrast-enhanced computed tomography imaging and the Liver Imaging Reporting and Data System 2018 classification were employed.

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Background/objectives: This study aimed to evaluate the safety, efficacy, and long-term outcomes of S-1-based neoadjuvant chemoradiotherapy (NACRT) in patients with resectable or borderline-resectable pancreatic ductal adenocarcinoma (PDAC).

Methods: This retrospective study included patients with PDAC who underwent S-1-based NACRT at our institute between 2010 and 2017.

Results: Forty patients were included in the study, including 15 (37.

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Background: Vessels encapsulating tumor clusters (VETC) pattern is tumor vasculature of HCC and is a predictor of prognosis and therapeutic efficacy. Recent radiological studies have demonstrated the predictability of VETC from preoperative images, but the mechanisms of image formation are not elucidated. This study aims to determine the relationship between VETC and intratumor heterogeneity in Gd-EOB-DTPA-enhanced magnetic resonance imaging (EOB-MRI) and to provide its pathological evidence.

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Purpose: Immunotherapies have led to a paradigm shift in the treatment of hepatocellular carcinoma (HCC). Studies have revealed the single-cell catalogs of tumor-infiltrating immune cells and the trajectories of their differentiation. Nevertheless, the spatial distribution of these immune cells with distinct phenotypes in the tumor microenvironment and their clinicopathologic significance in resectable and unresectable HCCs are still largely unclear.

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Background: Intravascular stent (IVaS) is sometimes used for suturing small vessels, but removing the stent after suturing is difficult. To overcome this problem, we developed an IVaS that integrates a stent and a manipulating string. This study aimed to investigate the usefulness of the modified IVaS (M-IVaS) by comparing it with conventional sutures (CS) and conventional IVaS (C-IVaS).

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Positive peritoneal washing cytology is an indicator of poor prognosis in patients with pancreatic ductal adenocarcinoma (PDAC); however, its sensitivity is relatively low. This study evaluated the performance of peptide nucleic acid (PNA)-directed PCR clamping as a molecular-based peritoneal washing cytology for sensitive detection of KRAS mutation in PDAC. Intraoperative peritoneal washing fluid (IPWF) obtained from patients with PDAC who underwent surgery was analyzed.

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Article Synopsis
  • * There were 32 patients with NTM-PPFE included, who showed a lower body mass index and higher initiation rates for NTM therapy compared to other types; however, they experienced more treatment-related side effects and had poorer treatment success rates.
  • * The findings indicated that NTM-PPFE is a distinct type of NTM-PD associated with a significantly worse prognosis
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Thermal or burn injury results in profound metabolic changes in the body. This can contribute to muscle atrophy, bone loss, as well as suppression of the immune system. While the mechanisms that underlie this hypermetabolic response remain unclear, patients with burn injury often have low circulating levels of vitamin D.

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  • The Japan Pancreas Society released the eighth edition of its classification for pancreatic carcinoma in 2023, highlighting several updates.
  • The updated classification maintains a focus on local invasion factors for the T category, as opposed to tumor size, and introduces a redefined naming system for lymph nodes with added location-based definitions.
  • Significant improvements include the incorporation of peritoneal cytology in the distant metastasis category and enhanced criteria for diagnosing tumors via endoscopic ultrasound-guided fine-needle aspiration biopsy (EUS-FNAB).
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Patients with pancreatic neuroendocrine tumors (pNETs) have limited access to effective targeted agents and invariably succumb to progressive disease. MUC1-C is a druggable oncogenic protein linked to driving pan-cancers. There is no known involvement of MUC1-C in pNET progression.

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  • Reciprocal inhibition of thigh muscles is key for studying neural circuits related to movement, but traditional measurement methods like the H-reflex have their limitations.
  • This study aimed to explore reciprocal inhibition in thigh muscles using transcutaneous spinal cord stimulation (tSCS) on 20 able-bodied males, focusing on the biceps femoris muscle (BF).
  • Results showed significant inhibition of the BF reflex when the rectus femoris muscle (RF) was stimulated in various ways, providing evidence of reciprocal inhibition from RF to BF and demonstrating the effectiveness of tSCS for such evaluations.
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Study Design: Burst strength study in porcine dural models and functional and histological study in rat dural models.

Objective: This study aimed to investigate the sealing strength and biocompatibility of Alaska pollock-derived gelatin (ApGltn) and fibrin sealants in disrupted dural injuries.

Summary Of Background Data: Disruption of the dura mater occurs during spine surgery, leading to cerebrospinal fluid leakage.

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The efficacy of next-generation sequencing (NGS) of tumor-derived DNA from intraoperative peritoneal washing fluid (IPWF) of patients with pancreatic ductal adenocarcinoma (PDAC) who intend to undergo curative resection remains unclear. The aim of the present study was to evaluate whether genomic mutations in tumor-derived DNA from IPWF samples of patients with PDAC who intend to undergo curative resection could be detected using NGS. A total of 12 such patients were included in this study.

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Unlabelled: Triple-negative breast cancer (TNBC) chemoresistance hampers the ability to effectively treat patients. Identification of mechanisms driving chemoresistance can lead to strategies to improve treatment. Here, we revealed that protein arginine methyltransferase-1 (PRMT1) simultaneously methylates D-3-phosphoglycerate dehydrogenase (PHGDH), a critical enzyme in serine synthesis, and the glycolytic enzymes PFKFB3 and PKM2 in TNBC cells.

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Objective: Ischaemia-reperfusion (I/R) injury is a severe post-operative complication that triggers an inflammatory response and causes severe damage. Hydrogen gas has anti-oxidant and anti-apoptotic properties and has been shown to be safe in humans. The study aimed to investigate whether hydrogen gas protects against skeletal muscle I/R injury.

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Non-cystic fibrosis bronchiectasis (NCFB) may originate in bronchiolar regions of the lung. Accordingly, there is a need to characterize the morphology and molecular characteristics of NCFB bronchioles. Test the hypothesis that NCFB exhibits a major component of bronchiolar disease manifest by mucus plugging and ectasia.

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  • Pancreatic cancer is aggressive and usually spreads, but bone metastases are rare; this report highlights a case of successful long-term survival following the surgical removal of such a metastasis.
  • A 60-year-old woman underwent surgery for pancreatic cancer and developed lung metastases, which disappeared after chemotherapy; then, a bone metastasis was found 77 months later.
  • The patient underwent thoracoscopic surgery to remove the bone metastasis after successful chemotherapy, and she remains cancer-free 44 months post-surgery, suggesting that surgical options may be viable for well-controlled cases.
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Objectives: The CD274 (programmed cell death 1 ligand 1, PD-L1)/PDCD1 (programmed cell death 1, PD-1) immune checkpoint axis is known to regulate the antitumor immune response. Evidence also supports an immunosuppressive effect of . We hypothesised that tumor CD274 overexpression might be inversely associated with abundance of in colorectal carcinoma.

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  • Alterations in the KRAS, CDKN2A, TP53, and SMAD4 genes are significant factors in the development of pancreatic cancer, but how they affect patient outcomes was not fully understood in larger studies.
  • Researchers examined a diverse group of 1,146 pancreatic cancer patients to identify relationships between specific gene alterations and patient survival rates using advanced statistical methods.
  • Findings revealed that loss of SMAD4 expression and an increased number of altered genes correlated with poorer disease-free survival and overall survival rates, along with a higher likelihood of liver metastasis rather than local recurrence.
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Metastatic pancreatic cancer is a rare condition and cases of pancreatic metastasis from cervical cancer are infrequently reported. Furthermore, the incidence rates of pancreatic tumors as the cause of pancreatitis and of pancreatitis in patients with pancreatic tumors are similarly low. Pancreatitis may occur when a tumor obstructs the pancreatic duct.

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In recent years, the neural control mechanisms of the arms and legs during human bipedal walking have been clarified. Rhythmic leg stepping leads to suppression of monosynaptic reflex excitability in forearm muscles. However, it is unknown whether and how corticospinal excitability of the forearm muscle is modulated during leg stepping.

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Pathological examination of formalin-fixed paraffin-embedded (FFPE) needle-biopsied samples by certified pathologists represents the gold standard for differential diagnosis between ductal carcinoma in situ (DCIS) and invasive breast cancers (IBC), while information of marker metabolites in the samples is lost in the samples. Infrared laser-scanning large-area surface-enhanced Raman spectroscopy (SERS) equipped with gold-nanoparticle-based SERS substrate enables us to visualize metabolites in fresh-frozen needle-biopsied samples with spatial matching between SERS and HE staining images with pathological annotations. DCIS ( = 14) and IBC ( = 32) samples generated many different SERS peaks in finger-print regions of SERS spectra among pathologically annotated lesions including cancer cell nests and the surrounding stroma.

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Rhythmic limb multi-joint movement like locomotion is controlled by intralimb coordination. Intralimb coordination changes entail immediate alterations in movement patterns and be related with cerebellum function. Synchronized cerebellum activity has known to modulate the frequency of walking, but not known the effect of only intralimb coordination.

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Aim: WNT/β-catenin-activated hepatocellular carcinoma (W/B subclass HCC) is considered a molecularly homogeneous entity and has been linked to resistance to immunotherapy. However, recent studies have indicated possible heterogeneity in the immunovascular microenvironment in this subclass. We set out to test the hypothesis that specific immunovascular features might stratify W/B subclass HCCs into tumors having distinct aggressive natures.

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Background: Follicular dendritic cell sarcoma is a rare stromal tumor with no standard treatment. However, some reports have revealed that follicular dendritic cell sarcoma has an inflammatory pseudotumor variant associated with Epstein-Barr virus infection that has a relatively good prognosis. In this report, we present a case of a resected inflammatory pseudotumor variant of follicular dendritic cell sarcoma of the liver, and have reviewed the literature on the clinicopathological, molecular, and genomic features of this tumor.

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