Conversation: The conversation between human and AI assistant.
[|Human|] i am a pitcher and got hit by a line drive off the bat that im guessing was around 90 mph. I was hit just off center of my shin. The area swelled for a while but almost immediately went away after icing the area. To my surprise the area never so much as bruised even a little. I now have this hard mass that is probably 3 x 5 and hurts to touch. The incedent was 2.5 weeks ago. should I be concerned?
[|AI|]  Hi, i appreciate your concern.it seems you developed blood collection at the site of hit on shin. When it is hit by hard object with a high speed, possibility of injury to bone, as well as covering of bone called periosteum is sure. This blood clot starts consolidating and calcification is started. After few weeks time it will be calcified more and periosteal reaction will lead to new bone formation. This new bone when calcified in due course of time, hard bone like feeling will be there.thanks.I will be happy to answer more future quarries.