Intraconal orbital dermoid cyst in an adult patient: a rare location.

Orbital dermoid cyst is a rare cause of orbital tumor in the adult population. Most of the orbital dermoids are extraconal, arising adjacent to bone suture and occurring in the pediatric patients. Deep orbital dermoid cyst located entirely intraconally is extremely rare. We report a case of intraconal orbital dermoid in an adult patient with CT and MRI evaluation.