Today on rounds, we had the opportunity to meet this lovely lady. She had a lump on her forehead which had been there for a month. What do you think it is?
This lump is called suture periosteitis or suture line exostosis. It is an inflammation of the suture lines of the nasofrontal bone of the skull and can often occurs in youngsters. Quite often the cause of this is unknown. In some cases the cause can be trauma. It is usually non painful and usually settles with time.
Could this be the origin of the unicorn 😉 as some of these masses can get very large and some young horses can have a horned appearance.
This condition or a related condition can occur in humans as the image below shows. No one is sure why they occur but it is thought some type of irritation to the line joining the bones in the skull occurs.