Purpose: The purpose of this study is to describe a spectrum of surgical approaches to orbital dermoid cysts, influenced by the anatomic location of the expanded cyst wall and other factors.
Methods: In this retrospective case series, we reviewed cases of dermoid cysts surgically excised during a 39-year period (1977-2016). Cysts were categorized according to the location of the expanded cyst wall and other considerations. The impact of these factors on surgical management was determined.
Results: We identified six dermoid cyst growth patterns based on the anatomic location of the expanded cyst wall that influence the surgical approach: anterior to the frontozygomatic suture (FZS), superior to the FZS, medial to the FZS and other lateral wall sutures, traversing the FZS and other lateral wall sutures, nasoglabellar, and sinus tract from the orbit to the skin. Two additional factors influencing surgical methodology included satellite inflammatory pseudocysts and recurrence after surgical resection.
Conclusion: Orbital dermoid cysts are not monolithic lesions. Functional and aesthetic outcomes can benefit from considering the anatomic pattern of cyst wall expansion and other factors in their surgical management.
Keywords: Anatomy of orbital dermoid cysts; history of orbital dermoid cysts; orbital dermoid cyst; surgical management of dermoid cysts.