Subconjunctival Fat Prolapse: What Radiologists Need to Know?

Area of Science:

• Ophthalmology
• Radiology
• Pathology

Background:

• Subconjunctival fat prolapse is a rare, benign condition characterized by herniation of orbital fat through a weakened Tenon's capsule.
• It typically presents as a yellowish, epibulbar mass in the lateral canthus region.
• Weakness in Tenon's capsule can be attributed to aging, trauma, or prior surgical interventions.

Observation:

• A case study involving a 70-year-old obese male with bilateral, soft, yellowish masses in the lateral canthal areas.
• The masses were identified as epibulbar fatty lesions.
• The lesions were noted to be continuous with the intraconal fat.

Findings:

• Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) demonstrated characteristic imaging features of the condition.
• Imaging confirmed the epibulbar fatty lesion's origin from intraconal fat, consistent with prolapse.
• Radiologists should recognize these specific imaging findings for accurate diagnosis.

Implications:

• Awareness of subconjunctival fat prolapse and its imaging features is crucial for radiologists to avoid misdiagnosis.
• Accurate diagnosis through imaging can prevent unnecessary invasive procedures.
• Understanding the etiology, including factors like age and trauma, aids in clinical management.