Microvascular density is closely coupled to RGC axonal volume in the ONH. The posterior laminar cribrosa is a site of high blood supply as evidenced by a greater ratio of microvascular density to RGC axonal volume. The greater percentage of tissue volume occupied by microvasculature in the prelaminar region may implicate it as a site where significant connections between the central retinal artery and short posterior ciliary arteries occur.
A previously well and immunocompetent 64-year-old woman presented with fever of unknown origin and acute hepatitis. Besides headache and nausea, she had no other symptoms. Her clinical examination was unremarkable with no clear focus of infection. She was thoroughly investigated and her biochemical profile suggested a viral or autoimmune aetiology. Multiple imaging modalities gave no further insight. Her serology and subsequent nucleic acid amplification indicated reactivation of latent cytomegalovirus (CMV). Her symptoms resolved with supportive care and no anti-viral therapy was needed. This case report highlights CMV reactivation leading to acute hepatitis in a well, immunocompetent patient.
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