THE SPECTRUM OF AMALRIC TRIANGULAR CHOROIDAL INFARCTION
Julia Nemiroff1, Nopasak Phasukkijwatana, Veronika Vaclavik
1*Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California; †Department of Ophthalmology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; ‡Department of Ophthalmology, University of Lausanne, Jules Gonin Eye Hospital, Lausanne, Switzerland; §Department of Ophthalmology, Fribourg Hospital, Fribourg, Switzerland; ¶Clinique de la Colline Hirslanden, Geneva, Switzerland; **Retina and Vitreous of Texas, Houston, Texas; and ††Greater Los Angeles VA Healthcare Center, Los Angeles, California.
Amalric triangular choroidal infarction presents with characteristic wedge-shaped ischemia on angiography. Optical coherence tomography angiography offers a noninvasive method to assess this condition and its varied causes, including giant cell arteritis.
Area of Science:
- Ophthalmology
- Medical Imaging
- Vascular Diseases
Background:
- Amalric triangular choroidal infarction is a rare condition affecting the choroid.
- Understanding its imaging characteristics and causes is crucial for diagnosis and management.
Observation:
- A multicenter, retrospective review of six patients with Amalric triangular choroidal infarction was conducted.
- Patients ranged from 7 to 90 years old.
Findings:
- Multimodal imaging revealed wedge-shaped choroidal ischemia in all patients.
- Optical coherence tomography angiography showed choriocapillaris flow reduction correlating with outer retinal abnormalities.
- Etiologies included giant cell arteritis (3 cases), carotid dissection, retrobulbar hemorrhage, and malignant hypertension.
Implications:
- Amalric triangular choroidal infarction has diverse etiologies, with giant cell arteritis being prominent.
- Traditional angiography confirms infarction, while optical coherence tomography angiography may serve as a noninvasive assessment tool.
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