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1.The report suggest there is a defect and calcification in the right sinus posteriorly with extending through the nasal fossa - this can be due to any infection post treatment , trace of healed infection.
2.Other possible cause could be malignancy malignancy.
3.It can be conformed with a
biopsy and nature of the cells involved.
4.Mucosal thickening noted in the rest of the
sinuses - which is inflammatory cause - can be treated with a course of antibiotics.
5.In this case i would recommend to take treatment and a followup scan - if symptoms persists a biopsy to evaluate further and treated accordingly.
Good luck.
Hope i have answered your query,
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