A Case of Abscess between Two Distinct Layers of the Orbital Periosteum

Abstract

The orbital periosteum contains two distinct layers. We present a case of a 35-year-old man with an 
abscess between two distinct layers of the orbital periosteum. The patient complained of left forehead headache. The headache was refractory to antibiotics, and swelling of the left eyelid occurred. CT scan showed a left 
orbital subperiosteal abscess. We performed two endoscopic sinus surgeries. We did not remove the lamina papyracea in the first surgery. Postoperative swelling of the left eyelid worsened. In the second surgery, we 
exfoliated the orbital periosteum, but the abscess was not drained from the orbital subperiosteal space. We 
exfoliated between the two distinct layers of the periosteum, and the abscess was drained. After the second 
surgery, the patient was doing well.