Hi i am Dr Ahmed Aly
thanks for using HealthcareMagic site ,
I had gone through your question and understand your concerns ..
I hope your son feels better soon and wont need any more surgical interventions .
From your given history your CT opacification of mastoid air cell means that these cells are inflamed with fluid or pus from his previoous mastooid infections and these cells are more prominent on his right side . this means that his air flow on the right side will be lower from that opposite side .
I think that means that your physician may prescribe antibiotics whether intravenous injections or syrup forms to decrease such inflammation and ear drops to help drain this cysts or inflamed cells .
In more severe cases or recurrent chronic
mastitis your ear specialist may mention minor interventions like , small tube may be inserted into the middle ear to ventilate and prevent fluid from getting into the middle ear. Typically, the tube will fall out on its own after six to 12 months simultaneously without medications .
Follow up your results with a good specialist and try medical treatments first for 3 consecutive months and you son will feel better and avoid late treatment and diagnosis to decrease the need of any further interventions .
Please click and consider a 5 star rating with some positive feedback if the information was helpful. Wish you good health,
Any further clarifications feel free to ask.