Going for brachy said...
If you want to argue whether, a G6 cancer can or cannot metastasize, please start a new thread.
I suspect that most agree that it cannot.
The point is, as Gary stated, you likely had more than just a pair of threes to start with. For the new guys who may come here with a G6 biopsy and believe that zapping it based on scans and be done with it are ignoring the possibility (or likelihood) that there may be more advanced tumors in there than the scans indicated and the biopsy missed.
Biopsies DO miss tumors... unless my G8 developed in the two years between my negative biopsy and the MRI two years later. And on the subject of scans, that MRI showed my PCa contained, but the surgeon discovered that it had spread.
2014-15: PSA's 9,12,20,25, Neg DRE's, false neg TRUS biopsy
6/16: MRI Fusion biopsy, 6 pos Rt Base, 2x40%+2x100% G8(4+4)
8/16: DaVinci RP, 3 foci EPE, PNI, 11 LN-, 53g 25%, BL SVI, pT3b
1/17: 18 months Lupron, PSA's ~.03
5/17: AMS800 implant, revised 6/17
8/17: 39 tx RapidArc IMRT (70 Gy)
1/18, 4/18, 7/18: PSA's 0.0, T=9
4/18 Dx Radiation Colitis (PRD)
10/18 Tx Sclerosing Mesenteritis