Publications by authors named "Satoshi Anai"

Objectives: The objectives of the study are to evaluate the oncological and functional outcomes of three bladder preservation regimens: radiotherapy alone (RT-alone group), concurrent chemoradiotherapy (CRT) using gemcitabine plus platinum (GP-RT group), and low-dose gemcitabine (LD-Gem-RT group) for muscle-invasive bladder cancer.

Methods: The three oncological outcomes, bladder-intact distant metastasis-free survival (BI-DMFS), cancer-specific survival, and overall survival (OS), were compared among RT alone ( = 10), GP-RT ( = 16), and LD-Gem-RT ( = 11) groups. Treatment-related adverse events were evaluated against the Common Terminology Criteria for Adverse Events (version 5.

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Background/aim: Radiotherapy is one of the most frequently used options for prostate cancer (PCa). However, adverse effects related to irradiation of surrounding normal organs are significant clinical concerns. Specifically, genitourinary toxicity can dramatically reduce the quality of life.

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Unresectable, metastatic, advanced urothelial carcinoma (aUC) is an aggressive disease and is treated with platinum-containing first-line chemotherapy, followed by immune checkpoint inhibitors and antibody-drug conjugates. Response to first-line chemotherapy is a vital priority in sequential treatment strategies because a better response to first-line chemotherapy is associated with a better response to subsequent therapies. Gemcitabine plus carboplatin chemotherapy is conventionally recommended for cisplatin-ineligible patients.

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Background: Hemorrhagic meningiomas are rare. We report a rare case of nontraumatic convexity and interhemispheric acute subdural hematoma (ASDH) caused by a falx meningioma.

Case Description: An 84-year-old woman with a history of atrial fibrillation and hypertension who was taking warfarin presented to our emergency department with a sudden disorder of consciousness.

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Background: Treatment of calcified lesions with conventional angioplasty balloons can be difficult due to insufficient lumen expansion, high dissection rates, and repeated revascularization. We report a case in which a scoring balloon was used in lesions resistant to angioplasty with a semi-compliant balloon.

Case Description: A 72-year-old man presented with severe stenosis and a highly calcified lesion in the right cervical internal carotid artery.

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In middle-aged and older men, clinicians often suspect lumbar spine disease when gait is impaired with intermittent claudication, but spinal dural arteriovenous fistula (SDAVF) may be the etiology. An understanding of the key magnetic resonance imaging findings of SDAVF is necessary for early diagnosis, appropriate treatment, and minimization of complications.

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In vertebrate embryos, the canonical Wnt ligand primes the formation of dorsal organizers that govern dorsal-ventral patterns by secreting BMP antagonists. In contrast, in Drosophila embryos, Toll-like receptor (Tlr)-mediated NFκB activation initiates dorsal-ventral patterning, wherein Wnt-mediated negative feedback regulation of Tlr/NFκB generates a BMP antagonist-secreting signalling centre to control the dorsal-ventral pattern. Although both Wnt and BMP antagonist are conserved among species, the involvement of Tlr/NFκB and feedback regulation in vertebrate organizer formation remains unclear.

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Objectives: Limited information is currently available on the efficacy and safety of axitinib for metastatic renal cell carcinoma (mRCC) patients with renal impairment. Therefore, the present study investigated the efficacy and toxicity of axitinib in patients with chronic kidney disease.

Methods: Post-hoc analyses were performed on a Japanese multicenter cohort study of 477 mRCC patients who received axitinib followed by 1 or 2 regimens of systemic antiangiogenic therapy between January 2012 and December 2016.

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Background: The sequence of first-line cytokine and second-line molecular targeted therapies may be suitable for some patients with metastatic renal cell carcinoma (mRCC) because of the expectation of complete remission and durable response achieved with cytokine therapy.

Methods: This was a phase III randomized controlled trial investigating the outcomes of low-dose interleukin-2 (IL-2) plus interferon alfa (IFNα) versus sunitinib as the first line and axitinib as the second line in patients with low- and intermediate-risk mRCC.

Results: Thirty-five patients were randomly assigned.

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Background: To compare the quality of life (QOL) in patients who underwent robot-assisted radical prostatectomy (RARP) or low-dose-rate brachytherapy (LDR-BT) for prostate cancer.

Methods: We enrolled patients who underwent LDR-BT (LDR-BT alone [n = 540] or LDR-BT plus external beam radiation therapy [n = 428]) and RARP (n = 142). QOL was evaluated using the International Prostate Symptom Score, Expanded Prostate Cancer Index Composite (EPIC), Sexual Health Inventory for Men (SHIM), and 8-item Short Form (SF-8) health survey.

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Malignant pulmonary lymphoma is very rare and the majority of which are B-cell lymphomas. Since primary pulmonary extranodal natural killer (NK)/T-cell lymphoma, nasal type (ENKL) is difficult to diagnose and associated with poor prognosis and aggressive course, some cases are diagnosed at the postmortem autopsy. We report a case of a 53-year-old man with primary pulmonary ENKL diagnosed by video-assisted thoracoscopic surgery (VATS) lung biopsy.

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Background And Aims: Chest X-ray (CXR) is indispensable to the assessment of severity, diagnosis, and management of pneumonia. Deep learning is an artificial intelligence (AI) technology that has been applied to the interpretation of medical images. This study investigated the feasibility of classifying fatal pneumonia based on CXR images using deep learning models on publicly available platforms.

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Background: The phase 3 CLEAR study demonstrated statistically significantly improved efficacy with lenvatinib plus pembrolizumab versus sunitinib, including progression-free survival and overall survival, in patients with previously untreated advanced renal cell carcinoma. This subset analysis investigated efficacy and safety in Japanese patients randomized to lenvatinib plus pembrolizumab or sunitinib in the CLEAR study.

Methods: Progression-free survival, overall survival, tumor response, and safety were assessed in Japanese patients with previously untreated advanced renal cell carcinoma randomized to receive lenvatinib plus pembrolizumab (n = 42) or sunitinib (n = 31).

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Studies have reported the relevance of immune phenotype, or presence of cluster of differentiation 8 (CD8)-positive tumour-infiltrating lymphocytes, to the anti-tumour efficacy of checkpoint inhibitors and to prognosis. The multicentre, retrospective ARCHERY study (UMIN000034131) collected tissue samples from Japanese patients with recurrent or metastatic renal cell carcinoma (RCC) who received systemic therapy between 2010 and 2015. In this exploratory analysis, the prognostic impact of immune phenotype and PD-L1 expression (separately and combined) was investigated using 770 surgical specimens and outcomes from patients enrolled in ARCHERY.

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Objectives: We aimed to investigate the effect of available treatment modalities on primary treatment selection in patients with localized prostate cancer and that of introducing robotic surgery.

Methods: We retrospectively studied 12 061 patients diagnosed with localized prostate cancer between 2004 and 2018 from 21 institutions. These institutions were divided into five groups according to the availability of surgery and radiotherapy.

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Sarcopenia is a known predictor of overall survival in several diseases. We investigated the relationship between sarcopenia and outcome of treatment with cabazitaxel (CBZ) for castration-resistant prostate cancer (CRPC) by a retrospective analysis of 37 patients, who were given cabazitaxel at our hospital, from December 2014 to November 2020. The skeletal muscle mass was evaluated using the Psoas Muscle Mass Index (PMI: psoas major muscle area at the level of the third lumber vertebra (cm²)/height x height (m²)) through computed tomography images.

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Purpose: The level of 6-sulfatoxy-melatonin (SaMT), a metabolite of melatonin, in first-void morning urine reflects blood melatonin levels from the previous night. We investigated the association between urine SaMT and sleep quality deterioration in patients with non-muscle invasive bladder cancer (NMIBC) treated with intravesical Bacillus Calmette-Guerin induction therapy (iBCG).

Methods: We enrolled 51 patients who received iBCG once weekly for 6 or 8 weeks.

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Background: The naturally occurring amino acid 5-aminolevulinic acid (5-ALA) is a precursor of protoporphyrin IX (PpIX) biosynthesised in the mitochondria. When accumulated PpIX is excited by light (wavelength of 625-635 nm), reactive oxygen species (ROS) are generated. Here, we investigated whether 5-ALA may increase the sensitisation of prostate cancer (PCA) cells to radiotherapy through the generation of ROS via its metabolite, PpIX.

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Background: Latest guidelines recommend kidney-sparing management as the primary treatment option for selected patients with upper urinary tract urothelial carcinoma (UTUC). One of the biggest issues of ureteroscopic laser ablation (ULA) is a high rate of surgical site recurrence, which is largely attributed to residual lesions at the initial ULA. Another clinical issue is a significant lack of non-invasive reliable detection tools of urinary recurrent tumors in this treatment setting.

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Purpose: The treatment landscape for advanced, unresectable, or metastatic urothelial carcinoma (aUC) has shifted substantially since the advent of immune checkpoint inhibitors (ICIs). We investigated the extent to which pembrolizumab therapy is superior to conventional chemotherapy as a second-line treatment.

Patients And Methods: A multicenter-derived database registered 454 patients diagnosed with aUC between 2008 and 2020.

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Article Synopsis
  • The study aimed to assess the effects of combining mirabegron with tamsulosin on urinary symptoms in prostate cancer patients post I-brachytherapy.
  • Patients were randomly assigned to either a combination therapy group or a tamsulosin-only group, with several urinary metrics evaluated after 3 months.
  • Results showed no significant improvement in total voided volume when comparing the two groups, but the combination therapy did decrease overactive bladder symptoms and urinary frequency.
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Introduction: Response to pembrolizumab after first-line chemotherapy is vital to prolonged survival in advanced, unresectable, and/or metastatic urothelial carcinoma (aUC). However, there are sparse clinical data on host-tumor immune modification by first-line platinum-based chemotherapy. This study investigated the association between response to first-line gemcitabine plus cisplatin (GC) or carboplatin (GCarbo) chemotherapy and response to subsequent pembrolizumab treatment.

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Background: In the phase III open-label KEYNOTE-426 (NCT02853331) study, first-line pembrolizumab and axitinib improved overall survival (OS) and progression-free survival (PFS) versus sunitinib for metastatic renal cell carcinoma (mRCC). KEYNOTE-426 evaluated patients enrolled from 25 sites in Japan.

Methods: Patients enrolled in Japan were included in this post hoc subgroup analysis.

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Objective: Higher quality of postimplant dosimetric evaluation is associated with higher biochemical recurrence-free survival rates after low-dose-rate brachytherapy for localized prostate cancer. Postimplant prostate D90 is a key dosimetric parameter showing the quality of low-dose-rate brachytherapy. In this study, to improve the quality of low-dose-rate brachytherapy for localized prostate cancer, we investigated pre-implant factors affecting the reduction of postimplant prostate D90.

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