Pre operative study
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There is a well defined expansile cystic lesion with fluid fluid level noted to involve superolateral maxillary bone and zygoma. Features favour aneurysmal bone cyst.
There is secondary breach of the outer table of zygoma with resultant subtle hypodensities within the proximal zygomaticus and distal temporalis muscle.
Also seen is breach of the left sided bony orbital floor with extension of hypodensities into the inferolateral extraconal space. Resultant indentation of the globe inferiorly with loss of fat planes between inferior and lateral rectus muscle noted.
Right orbit shows normal imaging features.