Paranasal sinus mucocele is a mostly benign disease but can cause irreversible complications depending on its location. A sphenoethmoidal mucocele (SEM) can cause compressive neuropathy due to its proximity to the optic nerve. Urgent endoscopic marsupialization is considered the treatment of choice for SEM. However, there is a scarcity regarding recurrence or operative size. Herein, the authors report a case of SEM that recurred after small endoscopic drainage. The patient was reoperated with wide cyst removal and nasal cavity ventilation expansion. Vision was partially resolved, and no recurrence was reported in the 6-month follow-up period.
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