Hello everyone. Mommies, could you tell me who has encountered hemangioma…

Hello everyone. Mommies, could you tell me who has encountered hemangioma in children? Initially we thought it was a birthmark, it was paler and at the hospital they said it looked like a birthmark. But it became brighter and bigger. In the end it turned out to be a hemangioma. How were they treated? Did it go away on its own? They say it might pass by itself.