A flagged finding leads to one of two next steps: watch this, or confirm this with one more test. The immediate next step in Korea is a same-day consultation with a physician who explains what was actually seen, not a report you read alone, and not a wait for an answer.
Every screening day at every partner centre ends the same way for every patient, finding or no finding: a same-day consultation with a physician, before you leave the building. If nothing was flagged, that consultation is short. If something was, it is where you hear about it first: from a doctor, in the same visit, not in a document that arrives later with no one attached to explain it.
If the physician decides a finding needs a closer look, the next step is a referral for further testing, arranged in Korea while you are still there, not a form you fill out after you have already flown home. What that further testing is depends entirely on the finding: it might be a repeat scan, a blood marker, or a specialist consultation, and which one applies is a decision the physician makes case by case, not something this guide can specify in advance.
The written report (the document version of everything covered in the consultation) follows afterward, and takes longer than the conversation itself does. For exactly how long, and why, see Same-day results: what that actually means: that article carries the turnaround figure and its source, and this page does not restate it, so there is only one place that number can drift out of date.
This page describes a process (what happens after a finding, and in what order), not a measured outcome. It cannot tell you what any specific finding means for you, whether it will need further treatment, or how that treatment would go, because that depends on the finding itself and on the centre handling it, neither of which this guide knows in advance. There is no figure on this page — no percentage of findings that turn out benign, no survival statistic, no claim that screening earlier changes how anything turns out — because none of that would be true in general, only in a specific case a physician has actually looked at. If a number like that exists with a real citation behind it, it belongs in a sourced article, not asserted here as a blanket reassurance.
Some findings you would rather take to your own doctor than manage from abroad. That is exactly what the written report is for. It is not a souvenir; it is the document your own doctor reads to pick up wherever the Korean consultation left off. Whether that document is actually accepted as-is, or your doctor repeats the tests anyway, is the largest objection this site answers on its own page: see Will my doctor accept these reports? for exactly what is in the report file and who signed it.