Hi Vaishnavi Reddy,
It seems like you are having polyp in the maxillary sinus. The soft tissue
intensity in the right mastoid air cells seems to be due to infection.
A FESS (Functional Endoscopic Sinus Surgery
) surgery to remove the polyp will be helpful.
Meanwhile, do steam inhalation twice daily with Karvol
Plus for symptomatic relief.
Get well soon.