Publications by authors named "Yuichi Uemura"

This study aimed to assess the effects of thienopyridine-class antiplatelet agents (including ticlopidine, clopidogrel, and prasugrel) on bleeding complications in patients who underwent robot-assisted radical prostatectomy. This cohort study used a database for robot-assisted radical prostatectomy at 23 tertiary centers nationwide between 2011 and 2022. Patients who received thienopyridines (thienopyridine group) were compared with those who received aspirin monotherapy (aspirin group).

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Introduction: Pembrolizumab administration has become the standard of care for patients with urothelial carcinoma, though a variety of adverse events have been reported. Presented here is a rare case of pancreatitis that occurred as an immune-related adverse event.

Case Presentation: An 81-year-old man undergoing treatment with pembrolizumab for multiple lung metastases from renal pelvic cancer was presented with a fever and diagnosed with pancreatitis based on elevated pancreatic enzyme levels and imaging findings.

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A 74-year-old man was diagnosed with bladder cancer and referred to our department. For definitive diagnosis, transurethral resection of the bladder tumor(TURBT) was performed. The pathological result showed plasmacytoid variant of urothelial carcinoma.

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The patient was referred to our department from neurosurgery for close examination of a renal mass that had been present in the lower pole of the kidney for approximately 2 year. Retrograde Pyelography and Ureteroscopy showed no obvious neoplastic lesion in the renal pelvis. Therefore, Percutaneous renal tumor biopsy was performed.

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Perivascular epithelioid cell tumor (PEComa) was introduced in the WHO classification of bone and soft tissue tumors in 2002, and Bladder PEComa is very rare. A 60-year-old man underwent TURBT after CT and cystoscopy revealed a 2.5 cm tumor with a concave center on the posterior wall of the bladder.

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Intravesical Bacillus Calmette-Guérin instillation therapy after transurethral resection of bladder tumor is considered as the most effective treatment for prophylaxis against the recurrence of high-risk, non-muscle bladder cancer. However, intravesical Bacillus Calmette-Guérin instillation therapy has some characteristic complications. Here, we report a case of infectious thoracic aortic aneurysm related to prior intravesical Bacillus Calmette-Guérin instillation, which consequently allows the spread into the adjacent lung tissue and secretion in sputum of Mycobacterium bovis.

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Article Synopsis
  • There have been limited reports on solitary synchronous gastric metastasis specifically from renal cell carcinomas, highlighting a gap in existing literature.
  • A 70-year-old woman was diagnosed with gastric metastasis of clear cell renal cell carcinoma after experiencing weight loss, leading to an upper GI endoscopy that revealed a submucosal tumor.
  • The patient successfully underwent radical nephrectomy and endoscopic resection, demonstrating that endoscopic techniques can effectively treat early-stage gastric metastases from renal cell carcinomas with minimal invasiveness.
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Radical prostatectomy is one of the major treatment options for patients with localized prostate cancer, and biochemical recurrence (BCR) after surgery is regarded as one of the representative indicators of the oncological outcome. The positive surgical margin (PSM) of the surgical specimen is considered to be one of the risk factors for BCR and its length (LPSM) was reported to be positively correlated with the risk for BCR. We retrospectively investigated the relationship between BCR and LPSM in 115 patients who underwent radical retropubic prostatectomy or laparoscopic radical prostatectomy without neoadjuvant hormone therapy at Shimada Municipal Hospital between 2008 and 2016.

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Pleomorphic giant cell carcinoma of the bladder is a highly malignant subtype and its prognosis is very poor. Among 22 previously reported cases, 14 cases were diagnosed as muscle-invasive tumors and the 10 patients died within 1.5 years after the initial diagnosis.

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Plasmacytoid variant bladder cancer is a highly malignant subtype associated with a high propensity for invasion, metastasis and poor prognosis. Among approximately 100 reported cases, most were diagnosed at an advanced stage and only 10 were diagnosed at a non-muscle-invasive stage. Due to the limited data on clinical features of non-muscle-invasive plasmacytoid variant bladder cancer, its treatment has not been established.

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Tongue, skin and brain metastases of bladder cancer are very rare and few cases have been reported. We report a case of tongue, skin and brain metastases of bladder cancer. A 61-year-old woman was referred to our hospital with gross hematuria.

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A 66-year-old man presented with multiple bilateral renal nodular lesions demonstrated by enhanced computed tomographic scan. He had a history of autoimmune pancreatitis and renal cell carcinoma, which had been treated with partial nephrectomy. We performed renal biopsy under ultrasound guidance.

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Nanosecond pulsed electric fields (nsPEFs) are increasingly recognized as a novel and unique tool in various life science fields, including electroporation and cancer therapy, although their mode of action in cells remains largely unclear. Here, we show that nsPEFs induce strong and transient activation of a signaling pathway involving c-Jun N-terminal kinase (JNK). Application of nsPEFs to HeLa S3 cells rapidly induced phosphorylation of JNK1 and MKK4, which is located immediately upstream of JNK in this signaling pathway.

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