ArticleInternational urology and nephrology2022
Investigation of the causes of BCG refractory in patients treated with intracavitary BCG as secondary treatment in superficial bladder tumors with transurethral resection.
Article in International urology and nephrology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors at 2 institutions in 2 countries.
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Abstract
backgroundNon-muscle invasive bladder cancers (NMIBC) tend to recur and progress over time. Bacillus Calmette-Guerin (BCG) is an effective therapy for the treatment of NMIBC in that it reduces both recurrence and progression rates. The present study investigates the causes of BCG failure, with emphasis on those attributable to application errors by the practitioner and/or patient.
methodsThe demographic and histopathological characteristics of 115 patients who underwent TUR-B for primary bladder tumors and who underwent intracavitary BCG in the postoperative period in the Urology Clinic of the İzmir Katip Çelebi University Atatürk Training and Research Hospital between January 2014 and January 2019, were analyzed retrospectively. BCG-refractory patients were compared with non-BCG refractory patients after BCG administration.
resultsThe extent of the tumor, and the involvement of the tumor in the bladder trigone and/or the bladder neck were found to increase significantly the likelihood of BCG refractory. When the micturition times of both groups were compared after instillation, the differences between the groups were found to be statistically significant. In the BCG-refractory patient group, the micturition time after instillation was shorter due to the tumor involvement in the trigone/bladder neck.
conclusionSome modifiable factors originating from the patient and the tumoral characteristics were found to have an effect on BCG failure. It was further determined that the time until micturition after BCG administration is an important parameter to be considered in the prevention of application deficiencies. We believe these factors should be subjected to careful consideration during patient selection and follow-up.
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