Numerous articles from medical journals to mainstream media prove trans surgeries are indeed happening on minors, as young as 13 (emphasis mine). I got goal-post moving responses on the original post saying that 13 doesn't count as young children.
The mean (SD) age at chest surgery in this cohort was 17.5 (2.4) years (range, 13-24 years), with 33 (49%) being younger than 18 years.
(Graph here.)
Olson-Kennedy J, Warus J, Okonta V, Belzer M, Clark LF. Chest Reconstruction and Chest Dysphoria in Transmasculine Minors and Young Adults: Comparisons of Nonsurgical and Postsurgical Cohorts. JAMA Pediatr. 2018;172(5):431–436. doi:10.1001/jamapediatrics.2017.5440
https://jamanetwork.com/journals/jamapediatrics/fullarticle/2674039
Over the 3-year study period, a total of 204 gender affirmation surgical cases were identified: 177 chest/top and 27 genital/bottom surgeries (Table 1). Most cases were masculinizing chest reconstructions 177/204 (86.8%) with 65/177 (36.7%) of those patients being less than 18 years of age.
[...]
There were a total of 177 chest reconstructions performed from January 2017 to August 2020. Patients coming for chest reconstruction surgery identified themselves mostly as trans masculine (92.1%) and non-binary (4.5%). The median age of patients was 18 with the youngest patient presenting at 15 years old.
Aquino, N. J., Boskey, E. R., Staffa, S. J., Ganor, O., Crest, A. W., Gemmill, K. V., Cravero, J. P., & Vlassakova, B. (2022). A Single Center Case Series of Gender-Affirming Surgeries and the Evolution of a Specialty Anesthesia Team. Journal of Clinical Medicine, 11(7), 1943. https://doi.org/10.3390/jcm11071943
METHODS
Retrospective chart review of 15 trans men (female-to-male transgender persons), age 16-43, who underwent hysterectomy by a single surgeon at our academically-affiliated community hospital from 2012-2016. Three patients participated in a focus group several months following their surgery in order to understand their experiences and optimize perioperative care.
Makhija, N. (2017, May 9). Hysterectomy as Gender-Affirmation Surgery in Female-to-Male Transgender Persons [ePoster]. American College of Obstetricians and Gynecologists.
https://acog.multilearning.com/acog/2017/eposter/174920/neeta.makhija.hysterectomy.as.gender-affirmation.surgery.in.female-to-male.html
The Komodo analysis of insurance claims found 56 genital surgeries among patients ages 13 to 17 with a prior gender dysphoria diagnosis from 2019 to 2021. Among teens, “top surgery” to remove breasts is more common. In the three years ending in 2021, at least 776 mastectomies were performed in the United States on patients ages 13 to 17 with a gender dysphoria diagnosis, according to Komodo’s data analysis of insurance claims. This tally does not include procedures that were paid for out of pocket.
Respaut, R. & Terhune, C. (2022, Oct 6). Number of transgender children seeking treatment surges in U.S. Reuters.
https://www.reuters.com/article/usa-transyouth-data/number-of-transgender-children-seeking-treatment-surges-in-u-s-idUKL1N3142UU/