Presentation
Post nasal discharge with abnormal smell.
Patient Data
Age: 30 years
Gender: Male
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Axial T2

Mucosal thickening associated with a fluid-air level in the right maxillary sinus.
Case Discussion
Acute sinusitis is an acute inflammation of the nasal and paranasal sinus mucosa that last less than four weeks and can occur in any of the paranasal sinuses.