Subconjunctival Herniated Orbital Fat Mimicking Adipocytic Neoplasm

Area of Science:

• Ophthalmology
• Pathology

Background:

• Subconjunctival orbital fat herniation is an uncommon condition.
• It can present as an intraorbital mass, potentially mimicking adipocytic neoplasms.
• Dehiscence in the Tenon capsule is often associated with this condition.

Purpose of the Study:

• To describe and discuss rare, benign subconjunctival orbital fat herniation.
• To differentiate it from potentially malignant adipocytic neoplasms.
• To evaluate the efficacy of transconjunctival excision.

Main Methods:

• Retrospective analysis of 13 patients (16 eyes) with subconjunctival orbital fat herniation.
• Transconjunctival excision performed for cosmetic reasons, discomfort, or suspected malignancy.
• Histopathologic examination of excised tissue, with analysis of complications and recurrence.

Main Results:

• Eleven males and two females were included; 10 cases were unilateral, 3 bilateral.
• Histopathology confirmed herniated orbital fat with characteristic cells and adipocytes.
• All patients achieved successful outcomes with transconjunctival excision, showing no recurrence at a mean follow-up of 10.6 months.

Conclusions:

• Subconjunctival orbital fat prolapse is a rare entity that can mimic adipocytic neoplasms.
• Transconjunctival excision is an effective treatment.
• Pathologic evaluation is crucial when malignancy is suspected.