Enlarged c1 transverse process?

[HercPehl]

I have an 8 year old female patient that I need a bit of advise with.
Parents noticed a hard lump that correlates to her c1 transverse process on palpable. The left transverse process is largervthan the right. It's painful with too much poking and seems to be limiting her rom partially. Her dr ordered an ultrasound to check glands etc as 2 drs thought it could have been a gland. The ultrasound indicated that it was a bone and that nothing seemed amiss and that no further examinations would be necessary.
She does not like gentle mobs due to pain and doesnt seem to limited by it. Her parents want it resolved.
Send her for further tests ie. Xray before commencing treatment with mobs/exercises/posture training? Anyone had any experience with an enlarged c1 transverse process?
Thoughts would be greatly appreciated!

Is the lump bone or soft tissue so yes further exam verifying the either would be great to give a guide how you should treat it? You need to verify that if it is tissue then you will have to "iron it" with any possible hands on tools you have. Posture wise is also a reliable assessment for treatment guide look at Kendal book if availble. Mobs or manips are not my favorite tool if the muscles are tight and you dont adreess that the bone will be displaced again in time.