UNE LOCALISATION RARE DUN SCHWANNOME ORBITAIRE A RARE LOCALIZATION OF AN ORBITAL SCHWANNOMA

Introduction: The infraorbital schwannoma or neuroma is a rare benign tumor of the orbit. Its clinical and radiological presentation is not very specific. Its diagnosis is essentially histological. Observation: We report the case of a 46-year-old woman, diabetic under treatment, consulting for an irreducible, non-axial and non-pulsatile exophthalmos. Clinical examination of the left eye found visual acuity corrected to 8/10 without limitation of ocular motility or diplopia. The examination of the right eye is unremarkable.The orbital CT objectified a mass measuring 25.3mm × 13.8mm, homogeneous of the floor of the left orbit, pushing the eyeball up and out. The orbital floor was pushed inferiorly by the mass however, its integrity was preserved. Tumor excision was performed via the sub-ciliary cutaneous incision with reconstruction of the floor by an iliac crest graft. The histological analysis allowed us to have a definite diagnosis of schwannoma. Conclusion:The schwannoma is a rare tumor of the orbit. Its diagnosis is established solely by anatomopathological study of the operative specimen. Its treatment is based on a complete surgical excision to avoid any recurrence.