A
mucocele is an
epithelium-lined,
mucus-filled cavity in the
paranasal sinuses.
Mucocele may develop due to
scarring and obstruction of the sinus ostium caused by midface sinus
trauma, such as orbital
bone fracture or endoscopic sinus
surgery. The authors
report two cases of orbital
mucocele as
complications following midface sinus
injury (endoscopic sinus
surgery in one case, and
orbital fracture repair in the other). In both cases, imaging studies showed a large orbital
mucocele accompanied by bony
erosion and orbital wall
remodeling, compressing the ocular
muscle. Using an open approach, the lesion was excised and marsupialized. The symptoms resolved, and the postoperative eyeball position was normal. Orbital
mucocele may cause serious
complications such as ocular symptoms,
orbital cellulitis,
osteomyelitis, and the formation of an
abscess with the potential to invade the
brain. Therefore,
surgeons should consider the possibility of
mucocele as a late complication of
surgery and initiate an immediate
work-up and surgical
treatment if needed.