Transurethral resection of bladder tumours (TURBT) using a wire loop remains the gold-standard treatment for bladder tumours, but it is associated with unacceptably high early recurrence rates after first resection. Improvements to standard resection techniques and a range of optical and technological advances offer exciting possibilities for improving outcomes. Early second resection has been shown to reduce recurrence rates, and increase response to intravesical chemotherapy and/or immunotherapy. It should be considered in most high-risk non-muscle invasive cancers (T1; G3; multifocal) being managed by bladder conservation. Newer energy sources, such as laser, may facilitate day case management of bladder tumours using local anaesthesia in select groups of patients. The novel technique of photodynamic diagnosis improves tumour detection, and quality of resection, and is likely to become the standard for initial tumour management. The traditional 'incise and scatter' resection technique goes against all oncological surgical principles. En-bloc resection of tumours would be far preferable and demands further development and evaluation. The technique of TURBT needs to evolve to allow first-time clearance of disease and low recurrence rates.
Urinary incontinence remains an important clinical problem worldwide, having a significant socio-economic, psychological, and medical burden. Maintaining urinary continence and coordinating micturition are complex processes relying on interaction between somatic and visceral elements, moderated by learned behavior. Urinary viscera and pelvic floor must interact with higher centers to ensure a functionally competent system. This article aims to describe the relevant anatomy and neuronal pathways involved in the maintenance of urinary continence and micturition. Review of relevant literature focusing on pelvic floor and urinary sphincters anatomy, and neuroanatomy of urinary continence and micturition. Data obtained from both live and cadaveric human studies are included. The stretch during bladder filling is believed to cause release of urothelial chemical mediators, which in turn activates afferent nerves and myofibroblasts in the muscosal and submucosal layers respectively, thereby relaying sensation of bladder fullness. The internal urethral sphincter is continuous with detrusor muscle, but its arrangement is variable. The external urethral sphincter blends with fibers of levator ani muscle. Executive decisions about micturition in humans rely on a complex mechanism involving communication between several cerebral centers and primitive sacral spinal reflexes. The pudendal nerve is most commonly damaged in females at the level of sacrospinous ligament. We describe the pelvic anatomy and relevant neuroanatomy involved in maintaining urinary continence and during micturition, subsequently highlighting the anatomical basis of urinary incontinence. Comprehensive anatomical understanding is vital for appropriate medical and surgical management of affected patients, and helps guide development of future therapies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.