I wanted to respond to let you know your post is seen. It have no answer as it could be many things such as an infection, size of the probe, general irritation from BCG and more likely nothing. At your next check up next month I would be sure to mention this.
DX 5/6/2008 TAG3 papillary tumor .5 CM in size. 2 TURBS followed by 6 instillations of BCG weekly with a second round of 6 after a 6 week wait.