Calciphylaxis Mimicking Giant Cell Arteritis: A Case Report
Nada Alyousef1, Wael A Alsakran2, Azza Maktabi3
1Department of Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.
Case Reports in Ophthalmology
|October 30, 2024
Summary
Calciphylaxis, a vascular calcification disorder, can mimic giant cell arteritis (GCA) symptoms in the eye. Histological examination is crucial for accurate diagnosis and appropriate treatment.
Area of Science:
- Vascular Medicine
- Ophthalmology
- Rheumatology
Background:
- Calciphylaxis is a rare, severe condition characterized by vascular calcification and occlusion.
- Giant Cell Arteritis (GCA) is an inflammatory vasculitis affecting medium and large arteries, often involving the cranial arteries.
Observation:
- A 64-year-old woman presented with symptoms suggestive of anterior arteritic ischemic optic neuropathy, a known complication of GCA.
- Clinical findings included sudden vision loss, optic disk edema, and a relative afferent pupillary defect, consistent with ischemic optic neuropathy.
- Histopathological examination ultimately confirmed calciphylaxis, not GCA, as the cause of the patient's symptoms.
Findings:
- Calciphylaxis can present with ocular manifestations that mimic those of GCA, leading to potential diagnostic challenges.
- Histologic confirmation is essential to differentiate between calciphylaxis and GCA, as their management strategies differ significantly.
- Ocular involvement in calciphylaxis can lead to irreversible vision loss if not correctly identified.
Implications:
- Accurate differentiation between calciphylaxis and GCA is critical for appropriate patient management and prognosis.
- Clinicians should consider calciphylaxis in the differential diagnosis of ischemic optic neuropathy, especially in patients with risk factors.
- Histopathological analysis of temporal artery biopsies is vital to rule out calciphylaxis in suspected GCA cases presenting with ocular symptoms.
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