Primary conjunctival epithelial cyst of the orbit.
BACKGROUND
A primary conjunctival epithelial cyst is an uncommon lesion that consists of nonkeratized, stratified squamous epithelium without dermal appendages.


METHODS
Case report.


RESULTS
A 57-year-old woman presented with a soft mass in the anterior portion of the nasal orbit. Magnetic resonance imaging demonstrated a rounded, cystic lesion between the right eye and the nasal bone. Histopathological examination following complete surgical excision disclosed a conjunctival epithelial cyst lined by nonkeratinized cuboidal epithelium without goblet cells and adnexal structures.


CONCLUSIONS
A conjunctival epithelial cyst should be considered in the differential diagnosis of a mass in the anterior portion of nasal or superonasal orbit.
Imaizumi
Masamoto
M
Department of Ophthalmology, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-machi, Yufu-shi 879-5593, Japan. imaizumi@med.oita-u.ac.jp
Nagata
Mayuko
M
Matsumoto
Celso Soiti
CS
Nakatsuka
Kazuo
K
Kashima
Kenji
K
D003229:Conjunctival Diseases / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D013508:Ophthalmologic Surgical Procedures / Q000379:methods; D009916:Orbital Diseases / Q000175:diagnosis* / Q000601:surgery