Viral Infections USMLE Step 1 Practice Question
A 32-year-old HIV-positive patient with a CD4 count of 28 cells/μL presents with progressive vision loss and floaters. Vital signs are stable; temperature is 37.2°C. Fundoscopic examination reveals granular lesions with retinal hemorrhages in a hemorrhagic border zone. Optical coherence tomography shows inner retinal involvement. The patient denies eye pain or photophobia. He has not yet initiated antiretroviral therapy. Which of the following is the most likely diagnosis?
Answer choices
- AAcute retinal necrosis caused by varicella-zoster virus
- BProgressive outer retinal necrosis caused by herpes simplex virus
- CToxoplasmic retinitis
- DCytomegalovirus retinitisCorrect answer
- EHerpes zoster ophthalmicus
- FCandida albicans endophthalmitis
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