Sametti lives in Joensuu, in eastern Finland. She has decided for the first time to talk openly about what she has been through. A story she shares with several others, not least in Sweden - but which few dare to talk about.

- It is terrible in so many ways to realize that you have made a mistake and imagined things, and therefore done something that is irrevocable, she says.

Sametti was born as a woman. She describes how she has had gender dysphoria since childhood - a suffering that occurs when the body and the perceived gender do not match.

- I've been thinking about my gender identity for years. When I heard about transgender people, I immediately felt: that is what it is.

Began doubt after treatment

Gender dysphoria is a psychiatric diagnosis, with treatment that is internationally accepted.

Previously, few people were diagnosed in Sweden, but in recent years there has been a large increase. A new and growing patient group has begun to come to the reception centers around the country: young girls who feel they are boys and want to undergo a gender correction - just like Sametti.

In Sweden it has also been seen that over half of the teenagers who are seeking also have other diagnoses - such as self-harm behavior, autism and anorexia.

- I suffered from fairly severe gender dysphoria and the treatment made it disappear. But that didn't solve the problems in the long run, says Sametti.

Sametti was treated with medication and surgery for several years. The breasts were removed, the voice darkened and she got more hair on her body.

Then she began to doubt.

- I wasn't supposed to regret it, so where am I now? My problems still remain. I haven't found a solution for them.

"They are not proud"

According to the research, few people regret their gender correction. A Swedish study shows that from the 70s until 2010, there were only 15 people - 2.2 percent. But the study does not include the new group that has increased explosively in recent years. How many of those who regret no one knows.

The risk of young people being wrongly given a diagnosis and irreversible treatment has hardly been discussed in Sweden. But the Lund Stream reception in Västra Götaland noticed a couple of years ago that patients were coming back.

- The group of patients who regret not standing on the barricades, we can say that. They are suffering and are not proud of this, but it is a crisis at the highest level, says Lennart Fällberg, head of care, and continues:

- They do not make a fuss about the issue, but probably direct a lot of the blame to themselves - because you ended up where you ended up - and not towards care, he says.

"Nothing can be done"

Today, Sametti identifies as a woman. But the consequences of the treatment she now regrets she will live with for the rest of her life.

- My body is as it is. The operations and everything, it cannot do undone. My voice sounds like this, I don't get my breasts back, I don't get it back down there. Nothing can be done.

Assignment review is included when she visits the clinic where she once received her diagnosis. She is there to help change her legal identity - to woman, again.

After the visit, Sametti is satisfied, she says.

- They have treated me professionally. So yeah, I'm actually happy. I am fine now, they have admitted that they did wrong and it is very big. That's a start.

The Tran Train and teenage girls report can be seen already on SVT Play - or Wednesday, April 3, 20:00 at SVT1.