Atypical manifestation of orbital dermoid: A case study

Abstract

Dermoids are choristomas, which originate from aberrant primordial tissue and are often evident soon after birth. They can be found anywhere in the body, but are seen near the bony suture line. They are categorized into superficial and deep. Superficial orbital dermoids usually occur in the area of the lateral brow adjacent to the frontozygomatic suture. Infrequently, a dermoid may be encountered in the medial canthal area, which is the second most common site of orbital dermoid. We report this case of orbital dermoid in an adult male on the upper lid presenting with unilateral mechanical ptosis of the left eye affecting vision.