← Return to prostatectomy vs radiation?
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Prostate Cancer | Last Active: Jul 17 7:48pm | Replies (52)
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Replies to "If the cancer is inside of the Prostate and they did a scan to confirm it,..."
Good info. And also bear in mind that small micrometastases and individual circulating tumour cells won't show up on any radiology scan (even PSMA-PET), so the oncologists never actually know for sure that the cancer is still confined to the prostate; instead, they take a highly-educated guess at probabilities based on things like Gleason score, Decipher score, germline genetic testing, location and type of known cancer cells (as @surftohealth88 mentioned), etc.
When the cancer "recurs" after a prostatectomy or full dose of radiation, that often actually just means that their educated guess was wrong (despite best efforts), and the cancer *was* already outside the prostate but not yet detectable.