Hello!
Exostosis (osteochondroma), Unicameral (simple) bone cysts and Nonossifying fibroma are benign tumors which occur in children.
When tumors start inside the skeleton, such as in leg bones, ribs or arm bones, they are called bone tumors. Sometimes benign bone tumors clear up on their own and only require that we watch them carefully, checking your child once or twice a year.
Be careful with the growth of the bone as sometimes it leads to fractures.
Take care!