The 14 year old appears to have been involved in the protest, not originally in the building. Or at least he's wearing the same color pants and shoes as a protester.

https://nitter.tiekoetter.com/SU_57R/status/2117397362532630924

He was talking to some Ukrainian guy in a uniform before being escorted out with the weird look on his face. A family member was coming to pick him up. Surgery is mentioned, but unclear to me whether it was saying he didn't need surgery or he's not going to have it performed immediately so get him out of here.

https://www.translate.mom/transcript/fWrsr892SiGx/en/14-year-old-boy-gets-help-contacting-his-sister