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Orbital presentations of giant cell arteritis
A G Lee1, R A Tang, S E Feldon
1Department of Ophthalmology, University of Iowa Hospitals and Clinics, Iowa City 52242, USA. Andrew-lee@uiowa.edu
Summary
Giant cell arteritis (GCA) can present with unusual orbital inflammation, mimicking pseudotumor. Early recognition is crucial to prevent vision loss from this rare GCA manifestation.
Area of Science:
- Ophthalmology
- Rheumatology
- Systemic Vasculitis
Background:
- Giant cell arteritis (GCA) is a systemic vasculitis primarily affecting large and medium-sized arteries.
- While GCA commonly causes ischemic optic neuropathy, leading to blindness, orbital inflammatory disease is an infrequent presentation.
- Recognizing atypical GCA manifestations is vital for timely diagnosis and treatment.
Observation:
- This study presents a retrospective case series of four patients with orbital manifestations of GCA.
- Orbital involvement in GCA can mimic other orbital inflammatory diseases, such as orbital pseudotumor.
- Diagnostic challenges were noted, with temporal artery biopsy confirming GCA in three cases, while one required an orbital biopsy.
Findings:
- Giant cell arteritis can manifest with orbital inflammatory disease, presenting as orbital pseudotumor in elderly patients.
- Orbital biopsy may be necessary to confirm GCA when temporal artery biopsy is inconclusive.
- Prompt diagnosis and treatment of orbital GCA are essential to prevent irreversible vision loss.
Implications:
- Clinicians should consider GCA in the differential diagnosis of orbital inflammatory pseudotumor in elderly individuals.
- Awareness of orbital GCA presentations can lead to earlier diagnosis and intervention, potentially preserving vision.
- This highlights the importance of a comprehensive diagnostic approach for suspected orbital inflammatory conditions in older adults.