When surgical margins are positive, several studies show that immediate radiation to the prostate fossa will lower the relapse rates and may slightly improve ten-year survival rates. However, since only 50% of men will relapse, waiting for evidence of a PSA rise before starting radiation may be a reasonable alternative (see Part One of this article). Generally, the monitoring process consists of checking PSA every 3 months. READ THE FULL ARTICLE HERE > https://www.verywell.com/positive-margins-after-surgery-for-prostate-cancer-p2-2782281