"Who grades" are those as described in the World Health Organization reports on cancers. The current edition of WHO Guidelines is dated 2016. Most of the various cancer guidelines have been updated.
As far as I can tell, there is no direct free access to the expensive WHO guides.
There is a ZORA link to a full text download of an article titled, "The 2016 WHO Classification of Tumours of the Urinary System and Male Genital Organs-Part B: Prostate and Bladder Tumours" at:
More common is the TNM description, see:
What's with this Bleeding ? 6/2015
DX: HG Papillary & CIS
3 Years and 30 BCG/BCG+Inf
Tis CIS comes back.
BC clear as of 5/17 !
RCC found in my one & only kidney 10/17
Begin Chemo; Cisplatin and Gemzar
8/18 begin Chemo# 3
Begin year 4 with cis
2/19 Chemo #4
9/19 NED again
1/2020 CIS is back...