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Small vessel involvement in Takayasu's arteritis.

Nicolas Noel¹, Nathalie Butel, Phuc Le Hoang

¹Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Pitié Salpétrière, Service de Médecine Interne 2, Paris, France.

Autoimmunity Reviews

|June 14, 2012

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Small retinal vessel occlusion is a rare but severe complication of Takayasu arteritis (TA). This microcirculatory issue can be an initial sign of TA and significantly impacts visual prognosis.

Area of Science:

Ophthalmology
Rheumatology
Vascular Medicine

Background:

Takayasu arteritis (TA) is a large vessel vasculitis primarily affecting the aorta and its branches.
Small vessel involvement, particularly in the retina, is less commonly described but can have significant consequences.

Observation:

This study analyzed 9 patients with Takayasu arteritis and small retinal vessel occlusion.
Retinal artery occlusion occurred in 7 patients, while 2 had venous involvement.
Small retinal vessel occlusion was the presenting symptom in 44.4% of cases.

Findings:

The majority of patients (55.6%) had Type V Takayasu arteritis, with 88.9% showing supra-aortic branch involvement.
While immunosuppressive therapy improved or stabilized the condition in some (6/9), 3/9 experienced worsening.

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A severe visual outcome was observed, with 33.3% of patients suffering irreversible blindness.

Implications:

Small retinal vessel occlusion is a rare, severe microcirculatory complication of Takayasu arteritis.
Retinal vessel involvement can be an inaugural manifestation of TA.
Early recognition and management are crucial to mitigate severe visual impairment in TA patients.