Bump ten months after rhinoplasty - advice? (photos)

Hi, I had rhinoplasty ten months ago. Everything went well. I didn't have any complications. It was successful operation. But unfortunately last couple of weeks there is a bump appeared on my nose. Sometimes I have a very bad pain there and it hurts ves me headache as well. Doctor removed the hump. I had open rhinoplasty. The dorsal hump looks very bad. Please can you advise me , what's this? Thank you in advance. I very appreciate your help.