Editing Transurethral Resection of Bladder Tumour (section)

== Diverticular tumours ==

* '''Accurate staging is difficult because the underlying detrusor is absent and increased risk of bladder wall perforation'''
* '''Invasion beyond the diverticular lamina propria immediately involves perivesical fat (stage T3a by definition)'''
* '''Management'''
** '''If low-grade diverticular tumour, use combination of resection and fulguration of the base.''' 
***'''Conservative resection can be followed with subsequent repeat resection''' if the final pathologic interpretation is high grade.
** '''If high-grade diverticular  tumour, adequate sampling of the tumor base, often including perivesical fat, is required,''' despite the near certainty of bladder perforation. 
***An indwelling catheter usually allows healing within a few days. 
***'''Partial or radical cystectomy should be strongly considered for high-grade diverticular lesions'''