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Case Reports
. 2021 Feb;4(1):e1296.
doi: 10.1002/cnr2.1296. Epub 2020 Oct 7.

Orbital cellulitis secondary to giant sino-orbital osteoma: A case report

Abbas Bagheri  1   2 , Mohadeseh Feizi  1   2 , Reza Jafari  3 , Mozhgan R Kanavi  1   2 , Nasim Raad  4
Affiliations
Case Reports

Orbital cellulitis secondary to giant sino-orbital osteoma: A case report

Abbas Bagheri et al. Cancer Rep (Hoboken). 2021 Feb.

Abstract

Background: Although osteoma is a common benign tumor of the paranasal sinuses, its orbital extension is not common. Secondary orbital cellulitis has rarely been reported in association with sino-orbital osteoma.

Case: A 30-year-old woman presented with left side proptosis, orbital pain and inflammation. Orbital CT scan showed a well-defined giant osteoma in the superonasal part of the left orbit originating from the left ethmoidal sinus associated with opacity of the ipsilateral ethmoidal sinus and infiltration of orbital soft tissue. After treatment by systemic antibiotics, osteoma was resected with combined external and endoscopic surgery and the patient recovered uneventfully.

Conclusion: Sino-orbital osteoma may manifest primarily as orbital cellulitis and needs early surgical intervention.

Keywords: Sino-orbital osteoma; endoscopic surgery; ethmoidal osteoma; giant osteoma; orbital cellulitis.

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Conflict of interest statement

The authors have no financial interest in the subject of this article.

Figures

FIGURE 1
FIGURE 1
Clinical photographs of the patient. Note the presence of left‐sided extra axial proptosis, globe displacement and eyelids and conjunctival inflammation at the patient's presentation A; improvement of proptosis and inflammation at the last follow up B. Note the presence of left exotropia that remained unchanged after surgery
FIGURE 2
FIGURE 2
Orbital CT scan of the patient. At presentation, a superonasal giant osteoma is seen at the junction of the left frontal bone and the ethmoidal sinus, extending to the extraconal space of the left orbit. Frontal sinuses are not pneumatized and left ethmoidal sinus is opaque and partially obliterated. Compressive effect of the mass is seen on the optic nerve and orbital soft tissues. A, axial view; B, coronal view; C, sagittal view; D, three dimensional oblique view. At final follow up, the orbital walls are intact excepting the lamina papyracea and the soft tissues have returned to normal position E and F
FIGURE 3
FIGURE 3
Illustrated microphotographs of the tumor showing dense mature predominately lamellar bone with peripherally located osteoblasts and inter lamellar fibro‐vascular tissue. A and B, hematoxylin and eosin
See this image and copyright information in PMC

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