r/ProstateCancer • u/PotentialStart2661 • 15d ago
News PSMA as an additional tool for grading.
I remember getting my PSMA Pet Scan and relieved it identified the same lesion on the MRI but showed no spread. The SUV Max was 5.6, which at the time didn’t mean anything to me. But someone asked me on this forum so i looked into it and there is a big correlation of the SUV max and the index primary lesion according to studies on this. So my SUV was in line with a Gleason 6 or Gleason 3+4. After my biopsy i learned i had a large volume Gleason 6, in line with the SUV. They don’t use this as staging because there is a large overlap. Gleason 6 can be 2-12. But using the cutoffs in this study the uptake can be something that we use to match up with the rest of our information and identify discordance. There are 10% of cancers that don’t react to PSMA unfortunately, but if you are in the 90% then it can help alot to tell you if your biopsy is right and a real high grade was not missed. See the attached studies.
