It's my understanding that MRI's usually don't detect small cancers Gleason 6 unless they're at least 5mm. This "limitation" can be useful for a man who has reason(s) to think he might have PC, but does not want his biopsy to be a fishing expedition. Random biopsies don't discriminate and often find clinically insignificant cancers. Taking 12 random samples in addition to the suspicious lesion found by the MRI defeats the purpose, it seems to me. The purpose being to identify more serious cancers that present an immediate danger.
It could be that many urologists are not willing to rely on MRI completely to identify all serious cancers so they believe they have an obligation to extend the biopsy to other random areas as a precaution. Unfortunately, in some cases, the very thing that is hoped to be avoided, i.e., the finding of indolent cancer, is presented to the patient and forces upon them very difficult decisions. In your case, however, the MRI did identify a suspicious lesion and it was confirmed by biopsy, so you still would have had a confirmed diagnosis of cancer even if he had not done the random biopsy.
Fortunately your cancer is Gleason 6. Have this confirmed by one of the experts Tall Allen suggested and you will see from your reading that you have many treatment options and every reason to be hopeful.
Age 69 DX 06/14
1st biopsy 3/13 negative
2nd biopsy 6/14 positive, 1 of 24 cores positive, 5% involved, GS 7 (3+4)
2nd opinion from JH GS 6 (3+3)
3rd opinion from UFPTI GS 7 (3+4)
mpMRI Duke SVI? biopsy scheduled 10/01/2014
Excellent health, vegetarian since 2005
Recent PSA history:
Post Edited (hrpufnstuf) : 9/29/2014 9:19:30 AM (GMT-6)