Large Frontoorbital Osteoma Causing Ptosis

Abstract: Osteomas are the most frequent benign tumor of the paranasal sinuses. The commonest site is the frontal sinus but intraorbital extension of frontal osteoma is rare. Here, the authors report a 15-year-old adolescent boy who presented with left superior orbital rim swelling and ptosis. Waters radiography and computed tomographic scan revealed a bone density mass in the left frontal sinus with upper orbital wall extension. The tumor was removed via open eyebrow incision. The histopathologic evaluation was consistent with osteoma.

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