Sinonasal Myxoma With Orbital Involvement: Case Report and Literature Review.

Sinonasal myxomas are rare benign tumors that typically occur in young children, with orbital involvement in 26% of reported cases. The authors report a case manifesting solely with progressive ocular motility restrictions and diplopia. Magnetic resonance imaging revealed an expansile lesion occupying the right posterior ethmoid cavity with right orbital involvement. Surgical resection reduced the tumor size. Although rare, this case demonstrates that sinonasal myxoma should be considered in the differential diagnosis in young patients with ocular motility restrictions.