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The CT scans are suggestive of chronic inflammation
affection the sinuses and middle ear
cavity. The scan findings need to be correlated with his clinical features to establish a clear diagnosis of your son's condition.
It is likely that you son has chronic sinusititis with mastoiditis and otitis media. The treatment usually would be microscopic surgery performed by an experienced ENT surgeon.
Discuss with your ENT specialist
and plan for the treatment at the earliest.
Hope this answers your query.
I wish him a speedy recovery.