Acute retinal necrosis CT
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Acute retinal necrosis Microchapters |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Luke Rusowicz-Orazem, B.S.
Overview
CT scans may reveal indicators of inflammation and infection by the causative pathogen of acute retinal necrosis. Such indicators include hypoattenuation along the optic tract—indicative of Varicella-zoster virus (VZV) infection—and hyperattenuation along the optic tract, retina, sclerae, and lateral geniculate body.
Key CT Findings for Acute retinal necrosis
CT imaging may reveal indicators of inflammation and infection by the causative pathogen for acute retinal necrosis (ARN). Such indicators include:[1]
- Hypoattenuation along the optic tract (suggestive of Varicella-zoster virus (VZV) infection)
- Hyperattenuation along the optic tract, retina, sclerae, and lateral geniculate body (demonstrates the presence of lesions)[2]
- Infection-caused shrunken left globe
References
- ↑ Bert RJ, Samawareerwa R, Melhem ER (2004). "CNS MR and CT findings associated with a clinical presentation of herpetic acute retinal necrosis and herpetic retrobulbar optic neuritis: five HIV-infected and one non-infected patients". AJNR Am J Neuroradiol. 25 (10): 1722–9. PMID 15569737.
- ↑ Sergott RC, Belmont JB, Savino PJ, Fischer DH, Bosley TM, Schatz NJ (1985). "Optic nerve involvement in the acute retinal necrosis syndrome". Arch. Ophthalmol. 103 (8): 1160–2. PMID 4026646.