Primary nonkeratinized epithelial (conjunctival) orbital cyst: a case report.
We report a 24-year-old male patient with the chief complaint of a slowly progressive tumor-growth over the supero-nasal quadrant of his left orbit over the previous 3 years. Physical examination disclosed negative systemic abnormality except ocular finding. Ophthalmological check-up revealed a firm mass palpable over the medial portion of left upper eyelid. CT scan was performed and revealed a well-defined cystic mass without involvement of adjacent bony structure. Finally, he underwent superior orbitotomy and the specimen was sent for histopathological studies. Histological sections showed a cystic structure lined with nonkeratinized squamous epithelium in which some goblet cells were present. This is the first case report of primary conjunctival orbital cyst in Taiwan, also, we believe, the first case in Asia.