Introduction And Hypothesis: The objective was to report our long-term experience of luminal urethral stricture (LUS) in women treated with dilation under general anesthesia.
Methods: Following institutional review board approval, charts of women who underwent urethral dilation (UD) under general anesthesia for LUS and had over 6 months' follow-up were reviewed. LUS was confirmed by urethroscopy. UD was performed using female dilators with guidewire and Heyman dilators when required. Outcome measures included the number of UD procedures and the duration and frequency of clean intermittent catheterization (CIC). Success was defined as the ability to void without repeat UD and with no need for CIC 1 year after UD. Possible predictive variables were analyzed.
Results: Between 2000 and 2013, a total of 30 out of the 32 women who underwent UD for LUS met the inclusion criteria. Mean follow-up was 59 (range: 7 to 151) months. Thirteen women in the success group showed improvement in the mean maximum flow rate (pre 11 ml/s to post 27.8 ml/s) and post-void residual (pre 85 ml to post 43 ml). In the failure group of 17 patients, 2 required chronic CIC 1 year after a single UD. Fifteen opted for repeat UD. After second (n = 5), third (n = 2), and fourth (n = 2) UD, 9 patients came off CIC and reported durable satisfaction. Four women remained on regular CIC. Two required a permanent suprapubic catheter.
Conclusion: At a mean follow-up of 5 years, UD for LUS produced durable resolution in 43 % of our patients. Another 30 % fully benefited from repeat UDs. Shorter duration of symptoms before presentation was significantly associated with success.
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http://dx.doi.org/10.1007/s00192-016-3006-8 | DOI Listing |
Objectives: To analyse and compare the functionality of extraluminal and intraluminal artificial urinary sphincters (AUSs), an in silico procedure has been defined and applied. Design and reliability assessments of the AUS are typically performed using a clinical approach, which does not provide data on mechanical stimulation of urethral tissues. Mechanical stimulation may determine tissue degeneration, such as urethral atrophy or erosion, the main causes of AUS failure.
View Article and Find Full Text PDFbioRxiv
December 2024
Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, 48109.
Inadequate response to androgen deprivation therapy (ADT) frequently arises in prostate cancer, driven by cellular mechanisms that remain poorly understood. Here, we integrated single-cell RNA sequencing, single-cell multiomics, and spatial transcriptomics to define the transcriptional, epigenetic, and spatial basis of cell identity and castration response in the mouse prostate. Leveraging these data along with a meta-analysis of human prostates and prostate cancer, we identified cellular orthologs and key determinants of ADT response and resistance.
View Article and Find Full Text PDFCell Stem Cell
August 2024
Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA. Electronic address:
Understanding prostate response to castration and androgen receptor signaling inhibitors (ARSI) is critical to improving long-term prostate cancer (PCa) patient survival. Here, we use a multi-omics approach on 229,794 single cells to create a mouse single-cell reference atlas for interpreting mouse prostate biology and castration response. Our reference atlas refines single-cell annotations and provides a chromatin context, which, when coupled with mouse lineage tracing, demonstrates that castration-resistant luminal cells are distinct from the pre-existent urethra-proximal stem/progenitor cells.
View Article and Find Full Text PDFIndian J Urol
December 2023
Department of Urology, IPGMER and SSKM Hospital, Kolkata, West Bengal, India.
Introduction: Reconstruction of fossa navicularis stricture (FNS) poses a challenge in providing acceptable functional and cosmetic outcomes. We describe our novel surgical technique and its short-term results.
Methods: This urethroplasty technique is a single-stage dorsal inlay buccal mucosal graft placement with subcoronal vertical sagittal ventral urethrotomy without glansplasty.
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