Conjunctival orbital cyst.

A 61-year-old woman had gradual onset of ptosis and painless proptosis of her left eye of 1-year duration. Orbital computed tomography (CT) showed a well-circumscribed superior nasal orbital tumor with uniform density. The mass was removed by anterior orbitotomy and histopathologically diagnosed as a conjunctival cyst. Recent reports have increased awareness of this entity. This case typifies findings of conjunctival orbital cysts. These cysts should be considered when a differential diagnosis is formulated for orbital tumors with a similar presentation.