You can be doing well for a long stretch after uterine cancer surgery, and then one day a scan turns up something small in the lung, and your mind goes blank. It's not rare for someone who got through more than ten rounds of chemo and stayed fine for about a year and a half to have the cancer show up again in the same spot. When that happens, the thought that usually creeps in is, "Can I keep trusting the hospital I've been going to, or should I move to a bigger one?" Almost everyone wavers here at some point, so there's nothing strange about it.
One thing worth knowing is that spreading to the lung doesn't automatically mean nothing can be done. If the spread sits as a single round spot in one part of the lung and everything else looks clean, you can weigh options with your care team, such as surgery to remove just that piece or a precisely targeted dose of radiation. On the other hand, if it's scattered across both lungs or also involves other organs, treating the whole body with medication usually comes first, rather than surgery. So the urge to think "just cut it out and it's over" is completely understandable, but in the end the test results are what draw the picture.
If the cancer has returned to the same place a second time, it's worth taking another look at whether the chemo drug you used the first time will still work this time. These days it's common to re-examine the tissue or genes and consider a targeted drug or an immunotherapy approach, so the old prescription may not simply be repeated. Because of that, before deciding on a new treatment, gathering your test reports, biopsy results, and chemo records all in one place will make the discussion go faster at whichever hospital you visit.
Looking into a large hospital in Seoul while being treated in a regional area is nothing to feel bad about. But rather than just moving on impulse, the right order is to tell your current doctor honestly, "I'd like to hear another opinion as well," and take a referral letter and your imaging files (CD) with you. Having those records can spare you the time and physical toll of redoing the same tests from scratch. The key is to choose a place with plenty of experience handling both gynecologic cancer and lung spread together; a big-name hospital isn't automatically the right answer.
Carrying a decision like this entirely on your own is just too heavy. If one family member helps keep track of the test schedule and the records, and you write down ahead of time the questions you want to ask at the appointment, it makes the whole thing feel lighter. Hearing from people who have walked the same path before can be a comfort too, but in the end, the direction that fits your own body is something you decide sitting face to face with a care team that has your test results in hand.
What's written here is just general information for people going through a similar situation, so please be sure to discuss your own treatment direction directly with your attending medical team.