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Aspects of treatment of non-muscle invasive bladder cancer

Sammanfattning
Bladder cancer is the third most common malignancy in men in Sweden and a total of 2560 patients were diagnosed with new disease in 2015. Over 95% of the tumours are of urothelial origin. Approximately 75% of the patients present with a non-muscle invasive bladder cancer (NMIBC). The first treatment is a transurethral resection of the bladder (TURB) and no further treatment is necessary for those with a non-invasive and lowgrade tumour. A second resection is recommended for patients with high-grade tumours in order to verify that no muscle invasion is present. These patients require additional intravesical treatment with either chemotherapy or bacillus Calmette-Guérin (BCG) vaccine. Side-effects are common and often transient but late side-effects are rarely seen. The prognosis of NMIBC is generally good, but for high-grade tumours there is a higher progression rate. The recurrence rate is very high for NMIBC resulting in multiple TURBs with high costs. The aims of this thesis were to report a late BCG-complication not previously described and to investigate the incidence of late recurrences in BCGtreated patients. Furthermore to register the number, size and histopathology of new and recurrent tumours and to register self-reported pain perception during transurethral procedures. In the first paper we describe a large lesion in the bladder with a persisting mycobacterial infection in 13 patients. The majority received tuberculostatic treatment and the lesions and infections disappeared. The second paper is a report on a large cohort of BCG-treated patients who had a tumour-free period of at least five years at some point after BCG-treatment. We found 10.8% late recurrences, suggesting that these patients require lifelong follow-up. The third study was a prospective registration of the size, number and histopathology of all new and recurrent bladder tumours during 15 months. The results showed that 22% in both groups were benign or inflammatory lesions and the absolute majority of recurrences were smaller than 10 mm, which has not previously been demonstrated. The fourth paper consists of a prospective registration of 1572 patients with self-reported pain, experienced during cystoscopy and transurethral procedures under local anaesthesia. The pain levels at cystoscopy were generally low and in accordance with previous reports. At transurethral tumour extirpations the pain levels were higher than at cystoscopy only but still within an acceptable range. The two latter studies support the increased use of biopsies and fulguration under local anaesthesia as most recurrences are small and easily managed in the office setting.
Delarbeten
Ströck V, Dotevall L, Sandberg T, Gustafsson CK and Holmäng S. Late bacille Calmette-Guérin infection with a large focal urinary bladder ulceration as a complication of bladder cancer treatment. BJU Int. 2011; 107(10): 1592-1597. ::PMID::21166754
 
Holmäng S and Ströck V. Should follow-up cystoscopy in bacillus Calmette-Guérin-treated patients continue after five tumour-free years? Eur Urol. 2012; 61(3): 503-507. ::PMID::22119022
 
Ströck V and Holmäng S. A Prospective Study of the Size, Number and Histopathology of New and Recurrent Bladder Tumors. Urology Practice. 2015; 2(5): 260-264. ::DOI::10.1016/j.urpr.2015.03.002
 
Ströck V and Holmäng S. Is bladder tumour fulguration under local anaesthesia more painful than cystoscopy only? 2017; In manuscript.
 
Examinationsnivå
Doctor of Philosophy (Medicine)
Universitet
University of Gothenburg. Sahlgrenska Academy
Institution
Institute of Clincial Sciences. Department of Urology
Disputation
Torsdagen den 8 juni 2017, kl 09.00, Hjärtats Aula, Blå Stråket 5, Sahlgrenska Universitetssjukhuset/Sahlgrenska, Göteborg
Datum för disputation
2017-06-08
E-post
viveka.strock@vgregion.se
URL:
http://hdl.handle.net/2077/51887
Samlingar
  • Doctoral Theses / Doktorsavhandlingar Institutionen för kliniska vetenskaper
  • Doctoral Theses from Sahlgrenska Academy
  • Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet
Fil(er)
Thesis frame (1.979Mb)
Cover (198.0Kb)
Abstract (60.71Kb)
Datum
2017-05-08
Författare
Ströck, Viveka
Nyckelord
Bladder cancer
BCG
transurethral resection
local anaesthesia
Publikationstyp
Doctoral thesis
ISBN
978-91-629-0158-5 (electronic edition)
978-91-629-0157-8 (printed edition)
Språk
eng
Metadata
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