Orbital and paranasal sinuses changes after neonatal orbital exenteration for massive teratoma management.

A neonate at 13 days of age underwent a lid and conjunctiva-sparing orbital exenteration for a massive right orbital teratoma. To reduce the degree of orbital contraction, the entire temporalis muscle was rotated into the orbit along with a dermis-fat graft. Sequential postoperative orbital imaging showed that hyperostosis developed in the orbital apex at the age of two months. Despite a significant expansion of the fat graft, by the age of 4 years, hyperostosis had progressed to the anterior portion of the orbit associated with over-pneumatization of the paranasal sinuses. This case demonstrates that the bony changes in the orbit after neonatal exenteration are complex and involve the development of the paranasal sinuses.