Publications by authors named "Tomoyuki Kaneko"

Article Synopsis
  • Chronic testicular pain (CTP) lasts over three months, often with unclear causes and requires differentiation from varicocele (VC) pain.
  • A study involving 77 patients revealed that those with CTP were older, more likely to be married, and had higher comorbidity compared to those with VC.
  • The CTP group reported significantly more severe and various types of pain sensations, and their emotional response to pain was also more intense, highlighting the usefulness of the shortform McGill pain questionnaire (SF-MPQ) in assessing CTP.
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  • A study reviewed 106 patients with advanced urothelial carcinoma treated with the antibody-drug conjugate enfortumab vedotin (EV) between 2021 and 2023 to evaluate the impact of treatment-related adverse events (trAEs) on survival outcomes.* -
  • The results indicated that 88.7% of patients experienced some form of trAEs, with skin and gastrointestinal issues being the most common, and a landmark analysis suggested that trAEs were linked to longer overall survival, particularly physical trAEs.* -
  • The study concluded that managing trAEs and understanding their prognostic value is important for improving the outcomes of EV therapy in these patients, highlighting that physical trAEs were
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Purpose: Metastatic non-clear cell renal cell carcinoma (nccRCC) is a heterogeneous disease with a poor prognosis and is treated with immunotherapy (IO)-based combinations according to the clear cell renal cell carcinoma. Tyrosine-kinase inhibitors (TKIs), such as cabozantinib and axitinib, are commonly used as the 2nd line therapy after 1st line IO combination therapy, but their efficacy as 2nd line TKI therapy for nccRCC is unknown. In this study, we performed a retrospective multicenter analysis of nccRCC patients who were previously treated with IO combination therapy and received 2nd line TKIs.

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Introduction: Although uterine perforation is a rare but serious complication, intrauterine devices are globally popular and effective contraceptive methods.

Case Presentation: A 76-year-old female patient manifesting symptoms of vaginal leakage and lower abdominal discomfort was admitted to our hospital. Diagnostic imaging identified a vesicovaginal fistula and bladder calculi attributable to perforation of the bladder by an intrauterine device that had been inserted over four decades ago.

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Background: Salvage robot-assisted radical prostatectomy (sRARP) after PSA failure in patients who underwent initial radiotherapy or focal therapy has rarely been reported in Japan. We aimed to report the oncologic and functional outcomes of the first 10 cases of sRARP.

Methods: Ten patients underwent sRARP after failing to respond to initial radiotherapy or focal therapy.

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Article Synopsis
  • * A total of 383 patients were analyzed, revealing that those with persistent PSA levels post-surgery had significantly shorter castration resistance-free survival (CRFS) and metastasis-free survival (MFS) compared to those with non-persistent levels.
  • * The findings suggest that stratifying patients by PSA levels can help tailor postoperative treatment, with patients experiencing better outcomes when receiving a combination of androgen deprivation therapy and radiotherapy if their PSA levels are high.
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Introduction: Enfortumab vedotin is an antibody-drug conjugate targeting Nectin-4 for the treatment of advanced urothelial carcinoma in patients previously treated with platinum-containing chemotherapy and immune checkpoint inhibitors. Common adverse events include rashes, peripheral neuropathy, and hyperglycemia. However, there are no reports on the development of myelodysplastic syndrome during enfortumab vedotin therapy in clinical settings.

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  • A multicenter study in Japan analyzed 515 patients with nonmetastatic castration-resistant prostate cancer (nmCRPC) to determine the best PSA doubling time (PSADT) cut-off for prognosis.
  • The study found that a PSADT of less than 4.65 months is a significant predictor for overall survival (OS) and cancer-specific survival (CSS), indicating worse outcomes.
  • Patients receiving novel hormonal therapy (NHT) had better progression-free survival (PFS) compared to those on older treatments, highlighting the benefits of newer treatment options.
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  • Recent trials have shown that upfront androgen receptor signaling inhibitors (ARSIs) improve overall survival in patients with metastatic castration-sensitive prostate cancer (mCSPC) compared to androgen deprivation therapy (ADT) or combined androgen blockade (CAB).
  • This study specifically evaluates the effectiveness of upfront ARSI versus CAB in Japanese patients with mCSPC using historical patient data.
  • Findings indicate that while CRPC-free survival is significantly longer for patients treated with ARSI, there are no major differences in cancer-specific or overall survival between the two treatment groups.
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  • This study compared the effectiveness of two second-line treatments, cabozantinib and axitinib, for patients with metastatic clear cell renal cell carcinoma (ccRCC) who previously received nivolumab-ipilimumab therapy.
  • A total of 48 patients were treated with cabozantinib and 60 with axitinib, revealing a median progression-free survival (PFS) of 11.0 months for cabozantinib and 9.5 months for axitinib, with overall response rates being quite similar (37.5% vs. 38.3%).
  • Although both treatments had comparable safety profiles, cabozantinib showed improved efficacy in patients considered to have poor-risk characteristics, suggesting it
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  • The study analyzed antimicrobial susceptibility patterns of 793 bacterial strains from patients with complicated urinary tract infections across eight species, using national surveillance data collected in Japan from July 2020 to December 2021.
  • Fluoroquinolone resistance, particularly among Escherichia coli and Pseudomonas aeruginosa, has risen over the years, with levofloxacin resistance in E. coli increasing from 28.6% in 2008 to 44.5% in 2021, while MRSA vancomycin susceptibility decreased significantly.
  • Extended-spectrum β-lactamase-producing strains were identified in notable proportions, with E. coli (24.8%) and Klebsiella pneumoniae (16
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  • This study created a prognostic model to predict disease recurrence in patients with lymph node involvement but no ongoing PSA levels.
  • Researchers analyzed data from 231 patients who underwent surgery between 2006 and 2019, identifying key factors affecting recurrence-free survival (RFS).
  • The model, which includes parameters like initial PSA level and surgical margin status, is said to aid in treatment discussions with patients.
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Objective: This study aimed to reveal the association between pretreatment serum testosterone levels and prognosis in patients with metastatic hormone-sensitive prostate cancer treated with androgen deprivation therapy.

Methods: A total of 91 patients were included in this retrospective study. Clinical data were obtained through chart review.

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Background: In recent years, site-directed therapies (SDTs) targeting progressive lesions in patients with oligometastatic prostate cancer have attracted attention. However, whether they effectively treat oligoprogressive castration-resistant prostate cancer (CRPC) remains unclear. Here, we investigated the efficacy of SDT in patients with oligoprogressive CRPC and identified prognostic factors.

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  • A 72-year-old woman had a retroperitoneal tumor found during a CT scan, which was 27 mm in size and located away from major blood vessels; imaging suggested it might be a vascular malformation.
  • The tumor was removed laparoscopically, and further analysis confirmed it was a capillary arteriovenous malformation, highlighting the challenges in diagnosing such cases before surgery.
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Background/aim: We present a case of solitary fibrous tumor, arising from the diaphragm in the retroperitoneal space, that was resected with robotic assistance.

Case Report: An 85-year-old female patient was referred to our hospital for evaluation of a suspected right renal tumor. Abdominal contrast-enhanced computed tomography revealed a tumor (maximum diameter, 36 mm) protruding from the superior pole of the right kidney.

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Objective: Enfortumab vedotin (EV) was approved for advanced urothelial carcinoma (UC) in 2021 after the EV-301 trial showed its superiority to non-platinum-based chemotherapy as later-line treatment after platinum-based chemotherapy and immune checkpoint inhibitors including pembrolizumab. However, no study has compared EV with rechallenging platinum-based chemotherapy (i.e.

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Introduction: The Geriatric 8 (G8) and Vulnerable Elders Survey-13 (VES-13) are established screening tools for assessing vulnerability in older patients. Here we investigated their usefulness as predictors of length of hospital stay and postoperative complications in Japanese patients undergoing urological surgery.

Materials And Methods: This study included 643 patients who underwent urological surgery (74% were for malignancy) at our institute from 2017 to 2020.

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To validate a 'drug score' that stratifies patients receiving immunotherapy based on concomitant medications (antibiotics/proton pump inhibitors/corticosteroids) in urothelial carcinoma (UC). We assessed oncological outcomes according to the drug score in 242 patients with advanced UC treated with pembrolizumab. The drug score classified patients into three risk groups with significantly different survivals.

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Background/aim: This study aimed to describe the voiding patterns of patients after surgical treatment of pelvic fractures and determine the predictive factors of lower urinary tract injuries (LUTIs) and spontaneous voiding failure among patients with surgically treated pelvic fractures at a tertiary trauma center in Japan.

Patients And Methods: We retrospectively assessed patients with surgically treated pelvic fractures in our tertiary trauma center during May 2009-April 2021. We excluded patients who died during hospitalization and who had indwelling catheter prior to the injury.

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Purpose: The prognosis of patients with pT3 upper tract urothelial carcinoma (UTUC) varies. The current study aimed to further classify patients with pT3 UTUC into different survival outcome groups based on tumor location and site of invasion.

Methods: This retrospective study included 323 patients with pT3 UTUC who underwent nephroureterectomy at 11 hospitals in Japan.

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Introduction: Primary prostate lymphomas are very rare; however, the incidence of malignant lymphoma is high among HIV-infected patients. Herein, we report a case of primary diffuse large B-cell lymphoma (DLBCL) of the prostate in an HIV-infected patient.

Case Presentation: A 47-year-old man presented with miction pain and back pain.

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Objectives: Although the treatment strategy for advanced urothelial carcinoma (aUC) has drastically changed since pembrolizumab was introduced in 2017, studies revealing current survival rates in aUC are lacking. This study aimed to assess (1) the improvement in survival among real-world patients with aUC after the introduction of pembrolizumab and (2) the direct survival-prolonging effect of pembrolizumab.

Methods: This multicenter retrospective study included 531 patients with aUC undergoing salvage chemotherapy, including 200 patients treated in the pre-pembrolizumab era (2003-2011; earlier era) and 331 patients treated in a recent 5-year period (2016-2020; recent era).

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The treatment for lymph node involvement (LNI) after radical prostatectomy (RP) has not been established. This study aimed to reveal the outcomes of various management strategies among patients with LNI after RP. Retrospectively, 561 patients with LNI after pelvic lymph node dissection (PLND) with RP treated between 2006 and 2019 at 33 institutions participating in the Japanese Urological Oncology Group were investigated.

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